771 signal loss

A few weeks back I had a service rep come to my house.  He stated that my receiver needed to be either mounted on my roof or moved.  Mounting on my roof is not an option.  He suggested moving to the center of my yard.  Again, not an option.  Said a neighbors trees were the problem.  My neighbor has cut trees back and I’m still having issues.  I am not getting my Hallmark movies channel at all.  I keep getting this message along the bottom of my screen and then a still picture advertisement for HBO or another movie channel will pop up.  Oddly these advertisements are crisp and clear.  
For the first time ever, I did not get a survey or a call asking if I were satisfied with the service call or the person who came to my home.

i was not.  He was rude.  He did not wear a mask.  He was supposed to be here between 2:00 pm and 4:00 pm, but did not come until 6:30 pm.  Yes, I was notified that he would be later than planned.  He seemed to be angry that he was still working at 7:00 pm.  
I asked him if Direct internet service was available for my home.  He did not answer.  
Again he was rude.  Can someone direct me to getting my service restored?