I'm going to block my grandma's phone number
Is your grandma blasting your phone in all hours?
She bothers me a lot
It is okay to keep your distance from her if you feel that way. I do not think that you should cut her out completely as it is mean to cut off family members.
She never listen to me when I tell her to stop pestering me. If she wants to talk to me she can message me.
Messaging works also. You should teach your grandmas how to use sms.