Sound and picture problems

There are no amps or splitters, just poor service that I'm being overcharged for. A technician was here 2 months ago and replaced every connection from the box at the the street to the back of the cable cox. Waste of time.  

Assuming you have coaxial, if you have 2 TV sets (2 cable-boxes), you have at least (1) 2-way splitter.

The splitter is on the main line outside the house, separate line run from it to each TV. It was also replaced.

Is there enough slack on the coaxial outside your house to bypass this splitter?  I understand the tech...or you...replaced the splitter and it's fine, but splitters, by design, weaken the signal because it splits it.

OK, I don't work for Cox so I should not have to provide diagnostic info to Cox, it's your system so you diagnose it. Cox is getting paid big bucks from all it's subscribers, it's your problem, deal with it. This is going nowhere real fast. I'll give 2 weeks to get it fixed.