The remedy is you can control yourself by ignoring than control others.
Law has the remedy to protect person image by filing a case of defamation but from the mention of the fact by you no case is made out.
Adv Shailendra Dubey
You can call me for advise on mobile no 9359867870
There is not a lot of context in your query as to what is the type of comments that are passed but ideally I would suggest to send a legal notice for them to not continue that behavior and say that if it were to complain, then legal proceedings will be initiated against them. But, then again, what legal proceedings under what sections are to be initiated, is totally dependent on what are the comments or what are messages being circulated.
For any further queries or information, feel free to contact me on 7601090381 or email@example.com