Has this happened to anyone?

I have been receiving probably 5 back to back calls a day from “venmo” saying someone is trying to log into my account. I ignore these calls and try to block the numbers but they call from different numbers. I am not also receiving emails saying the same thing. How do I get this to stop and why is this happening? I have changed my password and all that. If I delete my account will this stop? Im so frustrated with back to back phone calls for fifteen minutes straight every day. Thanks!!