Sorry if this question is beyond the scope of this sub but I wasn’t sure where else it would fit.

For about four months now I have been getting daily calls (sometimes multiple calls in a day) from a company called Midland Credit. When I first got the calls I would answer them because I assumed given the name that they were trying to pitch me a credit card. They are calling trying to collect on a debt that isn’t mine. I informed them that I am not the person they are trying to reach. I’ve had this issue before where they are trying to reach the person my cell number used to belong to. I’ve explained to them several times that they have a bad number and to please update their records. Every time they say they will and apologize but the calls keep coming in. It’s reached the point that I feel like I’m being harassed. I’ve began ignoring the calls and blocking the numbers they call me on but they seem to have a limitless supply. At this point I have blocked over thirty different numbers and they still call. I understand it’s a minor inconvenience but it’s driving me crazy. Is there anything practical I can do to stop these calls for good?