Notice Period

Greetings, My current company is not agreeing to let me go by serving 30 days notice period + 60 days buy out. Company policies reads: "On completion of 3 months, this contract of employment is terminable by you by giving 90 calendar days' notice in writing to TCSL . It is clearly understood, agreed and made abundantly clear that you shall have to necessarily work during the period of notice of 90 calendar days given by you under this clause. However, upon your serving the notice under this clause, TCSL may relieve you any time during the period of notice at its sole discretion. On completion of 3 months, this contract of employment may be terminated by TCSL by giving you 90 calendar days' notice or payment in lieu thereof. Notwithstanding the above, this contract of employment may be terminated by the company without any notice or notice pay, in the event your performance / behavior and/or conduct during the period of probation is found to be unsatisfactory / incompatible. Your failure to comply with this clause will entail monetary payment of damages to TCSL as may be determined by it at its own discretion having regard to the responsibilities shouldered by you while being in the employment of TCSL." I have given a written communication to my company mentioning that I will train my fellow team mates and pay the company for the 2nd and 3rd months. Yet they are not agreeing to let me go. Is this right on their side? I have got a better opportunity and the next company wants me to join in 30 days. Please tell me what can be done?