Balance with $300 from nowhere

Hi! My account is past due because I moved out of state several months ago, and I was still being charged an extra $25 for the smartwatch I had, on top of what I was already paying for the smartwatch. I continued making payments until recently, when I was no longer able to, and now my account is about $50 past due.

However, overnight, my balance suddenly increased to around $300, and I don’t understand why. I’m wondering if I’m being charged because I need to return the smartwatch.

Honestly, I don’t mind returning the watch if that’s what’s required, as long as I can receive a refund or have the charges removed appropriately.

I’m currently unable to contact Xfinity by phone, and the message/chat option isn’t available to me right now, so I’m looking for a solution through this channel.

Could you please review my account and explain why the balance increased to around $300, and let me know what I need to do to resolve this?

Thank you!