Picture and voice out of sync

Cox channel 117, Starttv has had a problem with the voices not syncing with the picture for several weeks now.  It occurs with the cable box and the Contour App.  

I tried using the chat function and explained the issue and they immediately did a reset on my box.  They then wanted to schedule a technician to come to my home.  I reminded them that it was only that channel and had nothing to do with my equipment.  Again an equipment reset was suggested.  

Next I tried speaking to a customer service rep.  My experience was exactly the same over the phone.  

I had already contacted Starttv and they suggested it should be reported to Cox.

This problem does not exist on Youtube TV.  I tried it on there streaming app trial version.

I just cannot understand why technical support is outsourced to companies that are only able to rely on scripts and can’t think past those stock answers.  

Any suggestions would be greatly appreciated..