How do I cope with cyber bullying, and blocking them does not work?

Report the incident ! Remember, what is happening to you will happen to someone else and you surely don't want that, right? Make sure you expose the person who preys of innocent people for enjoyment. They need professional help and their victims need support.

Don't feed them more content to bully with. Just stop answering or ignore them, in worst case senario, just try an exercise where you talk yourself up and misprove what they say, it might help.

You need to let someone know. A parent, teacher, guidance counselor, and the apps support group :) !

Acknowledging firstly what you going through can be the stepping stone of healing. With regards to cyber bullying, taking a break from the platform and eventually installing some apps for preventing unwanted conversations can actually help to overcome the underlying problems. Moreover, there are some great help and facilities, and if the problems escalate, it would be most appropriate to look for legal/police help with relation to bullying and its related consequences and line of actions. If the perpetrator keeps on bullying online, then there a need to talk to some more formal institutions with regards to the plea.