Anybody get constant spam texts?

Iv

So somehow someone named Debra used my phone number for something, and I am getting constant spam messages now for this Debra person. Up to a dozen a day sometimes and always at least daily. Like I’ve gotten 5 so far today and it’s only 8:13AM 😒 Is my only option to change my number? I’ve tried reporting the spam to AT&T but the numbers change every time so that’s really going no where. I also paid for a spam blocker app but it hasn’t helped at all! I’ve had my number for 15 years so I’ll be sad if I have to change it (sounds stupid I know but idc I like my number 😂) anyone have any tips for this?