I moved addresses and my account to completely messed up!

I recently moved and was dropped off my old equipment (still getting messages to return it!) and pick up a new modem.  But, my online account and phone number are still tied to the OLD address and it let me log on because the service has ended.  Their automated phone system and chat platform go in infinte loops.  (I was an executive for AI-based chat customer service platforms and this infuriates me that Xfinity's platform is so bad!) How do I get to a human to resolve without going to a store?