Comcast's business internet support

Hi there - If someone from Comcast who is smarter than their business support team could contact me off list, that would be great. There appears to be very high consistent packet loss for last 3 to 4 days and that is affecting my internet, You business support team keep insisting on sending an onsite tech. I explained that I don't believe that will resolve this issue (There is no evidence of an issue with the lines or signal levels) and it's a packet loss inside Comcast network, most likely aggregation/backhaul. Thanks in advance. Cheers, Masood