I finally got a technician to respond after replacing all of the boxes as the CSR at the store suggested and the same issue was occurring. The Tech replaced the splitter, all the coax ends and put a moca filter on the line, as I asked about on the very first call to the 800 number. A frustrating week finally came to an end. I will say that I had also contacted Comcastcares on Twitter and was pleasantly surprised that they do monitor that and kept up with asking what my status was.
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