My employer not confirming me even after 2 years of probabation

Hi. I am employed in a limited company. I have been employed with this organization for almost 2.3 years. I joined in at probation of 2 years and was hired for working in a specific department. The company did not create problems for me till 1 year except sarcastic,racist and discriminatory statements from my peers on various topics. The company kept on transferring me every quarter to different departments even if I was hired as specialist officer.Also it is clearly mentioned in my offer letter that monthly reports from my overseeing will be the basis for my confirmation but after 1 year of my service they started taking quaterly performance review suddenly along with monthly reports and denied from showing me the ratings and marks.I questioned the mangement regarding the same but they kept on twisting the issue and even prohibited me to write mails to the HRM Department. They reduced my variable pay by 50% without any intimation or discussion and there were no replies from the HRM Department regarding the same.Now they are saying that only monthly reports has to go for you so quaterly reports wont be considered , but are not ready to reimburse my variable pay.They have extended my probation by 6 months already by giving the same reasons of non performance and are again transferring me to NCR- Pitampura suddenly.I have been emotionally and mentally harassed by the authorities and has raised the issue but still no action was taken.The management is not clear about anything and showing personal grudges on me.