Idea Cellular — invalid number

I have been using idea for a long time now and it has been giving me problems since then. Even in cities it says no signal, sometimes a call to a friend sitting right next to me says out of coverage area. And in this time of pandemic it says Invalid Number for my parents numbers. They can call me but when i try to recall them it says check the number you have dialled for a number i saved and have been using for years. Fck this i had enough, when this pandemic is over i am switching to Jio and never looking back.