Parents have Directv and ATT, had some misunderstandings and are now stuck with cancelation and late fees.

Thanks for everyone's help and advice, as of now it seems the problems have been resolved. Thanks again!

My parents use an AT&T Hotspot as their home internet. They were convinced to cancel their old account and switch to AT&T unlimited and HD Directv.

After finding out they couldn't get local channels, they called ATT/Directv and were told they would cancel that and revert everything back to how it was, except they could keep unlimited.

Fast forward to now, they are being hit with multiple late fees and installation fees, and they are not receiving the 35 dollar credit that was promised. Is there any advice on what they can do to fix this? I think this all stems from miscommunication between the ATT costumer service and the Directv.