Company asking to pay for notice period to give my experience letter.

If as per your employment agreement, either of the parties, that is your employer or you, were to terminate the employment agreement or were to issue a 3 months written notice to the other party or to pay a sum equivalent to the salary of 3 months, then due to your contractual obligations, which you had accepted under the employment agreement, you are liable to pay the said amount to the company.

As far as the receipt of experience letter is concerned, the non-issuance of the same flows as a consequence of non- payment of the amount in lieu of the notice period. However, you may write to them asking for the same.