Keep getting credit card offers for someone else?

I have a rewards card for a store. Having the rewards only lets you earn points from purchases towards $ off. My points have not been used. There’s no fishy purchases on my history. Like zero fishy things except twice now that store has sent me an email offering a credit card for someone else. Like if my name is “Jane Smith” the offer is for “jane sellers”.

I told the company after the first time and they said sorry they don’t know what happened but then it didn’t happen again till a year later.

What’s going on? Who did I need to tell? The company said it’s not them but the credit branch thats responsible.