Best Maintenance Agreements in Dallas TX

In trying to cut down the noise on our AC, my husband noticed that when they replaced our unit 7 years ago they covered up our other air return with a metal plate, which probably has contributed to our lack of cooling in the front part of our house. I called to find out what exactly they had done and decided to request an AC check.Jimmy C came out timely, performed an AC check, saw the metal plate, but would not agree that it was Wilson that put it there or why it had been put there. We are not AC professionals and would not have known to put it there. Since the only ones to have worked on that AC or installed it, it would stand to reason who put it there. Why, is a mystery to me. He removed it and took it back with him. He did his AC check and washed the coils outside on the unit. The next day or so, my husband just happens to go out back and notice that he took a panel off the unit but did not replace it. Thankfully the screws were still there, but it makes no sense why he wouldn't replace something he took off.Needless to say, very disappointed with their service and overall experience with Wilson. Will not be using them again!!