i have genuine question . i use credit card a lot and i pay insurances in credit card i pay like many bills from credit card like telephone bill etc etc list goes on . what if i cancel my credit card i mean if i cancel my credit card do i have to cancel all this insurances also or not how does it work because i want to cancel my one of the credit card but i am confused if i have to cancel insurances all sort of things also or not

Say you pay your rent writing a check and you decided to close your bank account. Will you need to move out because you closed your bank account? 

You can close your CC account but you'll not be required to cancel your insurance. You'll just have to pay it using a different card or method (check, auto payment etc). 

IG, you don't have to cancel anything. But before you close your credit card account, just call up your insurance companies and tell them that going forward you would like to use a different card for payment and provide them with the account number. You can actually call them after you close your credit card account but I think it is better to do it before you close it because if a bill payment comes through after you close the account and gets rejected, the insurance companies might charge you a fee.