Anyone here who can teach me any simple chants or spells that could help me drive out my hatred? I’ll wait for the replies. Thank you very much!

Have you tried just simple meditation? I have heard of spells to do what you are asking about, but they have some nasty side effects, including in some cases, the expelled hatred turning on the person like a for of poltrigeist.... Usually the best way to deal with it is to face and learn to cope with it in your own way without it controlling you. Hatred of someone or thing is still a part of you and when you fragment yourself through spells, it usually never ends nice. That is my advise at least.... as to the spells or chants themselves I got nada....

I already tried that Sidi Sessinu but still hatred is eating me up. I’m open for any option that may help me.

Rhaine, perhaps you should try some average means of dealing with your hatred - I'm sure you could find some resources for it. I would suggest the meditation too.
Also, perhaps you could try writing down what is causing you such distress and then analyse it and work on dealing with it in parts. If you can figure out what makes you feel that way, you can deal with those pieces - try to rationalise it if you can't figure out the problem. And then, perhaps find some means of coping.
That's all I can offer, so I hope that helps. I, too, don't have any spells or chants, but I think this is something that would be better dealt with without them.

I know what causes me this hatred. I really hate those people whom I cared for but betrayed me on return. Although I hate them too much I don't want to take revenge that's why I need to find away to cope with this hatred.

So that is the root of the problem...... let me talk to Rain, may hap she has a few tricks in that area.... I let you know if she got anything or will have her contact you via PM.

Anything you need to work on specifically and you don't want others privy to, pop me a note here, on facebook, or in my email.

Sounds to me what you need more is cleansing and healing first. With your permission I will happily include you on my nightly Reiki list, as well as have special sessions for a while.

First step is to connect with Source, whatever you want to term it or see it. Images I've used to assist me have been reaching for a sun, diving into the bottom of a hotspring, standing under a waterfall, and entering a large mirror. Experiment and find what works best for you, or with other mental images if these don't resonate for you. You don't technically have to cleanse wherever you are working, but with your current state it could only help.

I rather like using the Misogi Norito, and it's always helped those that I've read it with. Excellent for removing and discarding impurities, and when in a state of anger we tend to make them a lot. May I suggest using the image of water or light washing through and over you while using this or any other chant?

Here is one version:
I use the version from Ms Llewellyn's Norito translations and also the short form from the Tsubaki Grand Shrine of America's Ko Member Handbook personally.

Misogi no O Harai (Prayer for Purification through Misogi)

Takama no Hara ni kamu zumari masu
Kamurogi Kamuromi no mikoto mochite
Sume mi oya kamu Izanagi no Mikoto
Tsukushi no Himuka no Tachibaba no Odo no
Ahagihara ni Misogi harae tamaishi toki ni are maseru
Haraedo no O Kamitachi
Moromoro no magagoto tsumi kegare o
Harai tamae kyome tamae to
Mosu koto no yoshi o
Amatsu kami kunitsu kami
Yaoyorozu no kamitachi tomo ni
Kikoshi mese to
Kashikomi kashikomi mo maosu

This one works for me anyway.

If that doesn't help remove the anger, and dealing with it via normal means isn't working... You could channel the anger into a paper. Write the reason for the anger in as much or as little detail as you want. Put all of it that you hold (or can at least get out) into the paper... Then burn it with the intent of the anger breaking down and being transmuted from a gross dark color into a golden light, something better and positive.

By holding onto anger, you only make the bonds grow tighter. It's hard to release it, but I am glad that it is what you desire. I have faith that you will be able to attain a calm state.

What is a Reiki list? If it can help me out of this undesirable feeling please include me. Thank you very much!

Sounds to me more like your hurt. You hurt not hate. Though it CAN turn into that. Any of my negative emotions easily get burned up in my forge fire. Forging always seems my best bet, but you can find an activity that will help. I've been down this route several times in my life, so I empathize with your situation. Just don't let your pain eat you and turn into real hate. You will always have people who will hurt and betray you. Don't let them get you down. They are not worth your precious time.

Reiki is a modern healing and relaxation method founded by Mikao Usui using "sacred" or "original" chi. I've been experimenting with it a lot since I received my attunements, and have found it beneficial. It doesn't clear everything up instantly, you still have to do footwork on many things, but it can help the healing process. I've also tested it for myself for purification purposes. I tend to do remote sessions more often than "hands on" sessions because most everyone that I know is at a distance to me (such as you, my friend).

And Kaji is right, don't let people get you down. People do what they do for their own reasons, and it only comes back to bite them in the... well... you know.