cannot unlink old address - charged extra

hey there!

I scheduled a move through xfinity... i said I'd move on the 31st. Old place schedules charges for the 7th of the month - now the bill is scheduled for 21st.

I assumed I would simply pay my regular rate on the 7th, but instead, I'm being charged $25 from my old address on top of the $40 at my new place.

I also cannot unlink myself from the old address, because I have to transfer my "admin rights to another user".

Thanks