What can I do if I got legal notice from my previous company?

Hello, My previous company has issued me a notice from the legal team asking for a recovery of hefty amount on pretext of miselling and wrong commitment to the client whereas I have already served the whole notice period, got the Full and Final payment as well as experience letter from the employer. The company has refunded the money to the client and company didn't incur any cost still they are asking for a recovery and putting me in cheating and criminal breach of trust scenario. I have already given a written apology to the organization and the client. So can a company claim for a recovery or take a legal action against their previous employee? Can my previous company has right to indulge and convey this to my present company even though Background verification process is completed. Do I am liable to pay the recovery amount whereas they have deduct some amount from my F&F payment on pretext of other incident.