SRO Request

I have had persistent internet issues due to noise on my cable line (specifically in the 620-640MHz range) which causes substantial slowdown and sporadic disconnection. The problem was identified by a tech a few months ago as being present at the pole switch, and confirmed not to be associated with any of the wiring in my house or my hardware. At that time he put in a ticket to have the problem addressed, and it was within several hours. Everything worked correctly until a few weeks ago when the exact same problem returned. This time I have been unsuccessful communicating the problem to any Xfinity staff, who scheduled incorrect types of tech appointments and were generally unhelpful. I finally did get a tech out who understood the problem and said he would put in a ticket to resolve the problem, but that didn't seem to actually occur, as I received no notification of ticket as I had previously, and the problem has only gotten worse. I was told on the phone by the local support that this needed to be a specific type of SRO request but they couldn't make it for me and no one I have spoken to at Xfinity by phone or chat knew what I was talking about.