Requesting a sales call review

we recieved a call from an AT&T rep offering us a bundle package for 89.00 for tv,phone and internet. i live with my exspouse they took her ssn,credit card info.my ex told the sales rep AT&T is not out our way so they said they would put a hughesnet dish on the roof for phone and internet. we agreed to this bundle package . so a few days went by till installation day came. hughesnet put there dish on exs roof.but ditect tv never called or showed. we learned later direct tv said ex could not get bundle because of low credit rating. i was a previous customer so i could not get bundle also. now without bundle DTV wanted 112.00 a mo. and hughesnet wants 93.00 mo.We are elderly , felt like a scam. someone should have told us we could not get the bundle package so we could have stoped hughesnet from installing there disd ,but no. now they say we are under contract or oue 680.00 cancel fee they have our long time phone number. i had open heart surgery and ex had a heart attach our doctors cant reach us. i disconnected the dish the day after it was installed. i dont feel we are under contract. but they disagree and threten me with a privacy section of the contract. if i try to fight this. they have hung up on us. i have been on the phone on hold transfered from one person to another for days and days. what to do ?