HDFC Bank — Recoverable Dues Intimation for F&F[protected] Employee Code - P14707

I have received a legal notice today (15/10/2020) stating I am liable to pay Rs.11, 675/- in lieu of the notice period not been cleared. Adding to this I had been receiving emails from HDFC Bank regarding the same topic, to which I had been replying again and again but received no response in return.

Even I have replied to all whom it was cc, but no one replied to me back. I am confident that i haven't signed an offer letter. Therefore, it doesn't bind me to pay any dues. So if in case you have my signed offer letter or any document which binds me to pay the dues, then please send me a scanned copy as proof as well as for my reference.