I want my service restored to delete the HD and have the distortion eliminated.

When I first switched from Time Warner Cable to ATT Uverse, I was thrilled.  Time Warner’s customer service was rated the worst in the country and my own experience with them validated that rating.

A few months ago, my cable TVs were having problems and I was sent a new part, but I was unable to install it myself.  I live alone, I am 74, and not very capable with tech.  I also have physical limitations.  

I  called again and a serviceman came to put in the new part.  He was fantastic.  Turns out the new part was also bad, but the serviceman (Brett?) had one on the truck and he installed that.  Success.

However before he left, he put my TVs in the HD mode although I did not have HD.  He thought I may like it better but I do not.  The picture is distorted, of course, and I want my old NON-HD put back.  When I called about it (several times) they were not able to change it back remotely and did not offer a free service call to remedy the error.  So, in total frustration, I asked how much it would be a month to go ahead and add the HD.  I was told it would be an additional $7.00 a month, so I relented and agreed to start paying for HD, but it was much more.  I denied myself the HD to save some money IN THE FIRST PLACE!!!!!!!! 

I want my service restored to delete the HD and have the distortion eliminated.  Can you PLEASE help me?