They should only run your credit once, and that is only with your permission. If they continue to contact you after you have repeatedly asked them not to, that can be considered harassment. I recommend asking to speak to a manager and explicitly request to be permanently removed fro their calling list. After that, they can no longer call you. As for credit checks, if they pulled your credit without permission, you may be able to have that removed from your credit report by contacting the credit bureaus and notifying them of an error. Good luck, and I hope the company stops harassing you.

I’m not sure. If they are doing a soft credit check, it won’t affect your credit score, so it shouldn’t matter. Companies are only allowed to do a hard credit check if you give them permission.