Harassed by old mutual

I'm tired of being harassed, woken up by old mutual calls and when you answer the call they don't talk, I have requested before that they remove my name in their database but everyday I'm being woken up by their calls, even late at night, I'm tired of this. I'm not even holding a single policy with you guys, if I block this number, you call with another number immediately just to show me that you have lots of numbers