Continuing service issue.

signals are delivered compressed.  There is a device, which is probably defective on the pole outside,  changing this should fix this problem.  Comcast sent someone to fix this, more than once.   After hours on the phone (with someone who did not speak english very well), and having technicians come to the house who did not know what was wrong, they finally sent someone who knew what the problem was and who said they would send someone to fix it.  Finally it improved somewhat, but has now returned.  I guess they think that terrible customer service is okay.