A legal notice is valid if the company is not a Pvt Ltd?

A legal notice is valid if the company is not a Pvt Ltd?
I am working on an IT farm. The company blamed me that I wrote something on social media for the company and asked for clients for the company.
I was resigned from that company 16th feb 2020. And the company give me an offer but i do not accept it.

Dear Lav Kshatriya,

What you have written can't be understood. While raising a post on the public forum please write coherently. Write in a sequence or chronological order what has happened. Thereafter, write your expectations too. Secondly, the members of this forum expect proper grammar of the sentences is maintained. Therefore, if you wish to get a piece of good advice, then maintaining their expectation is mandatory and not a choice!

Thanks,

Dinesh Divekar