Xb8 provision problems and support refused to escalate to level 2 without a second technician visit which is not available

Please help me I’ve already confirmed with the last technician that the Wiring is all fine and the signal to the line is good. The only issue it could be is the router but Support support insisted on another technician coming out even though they don’t have an available appointment until the beginning of next month which is over 13 days away and I’ve already been out for four days and had to wait for my first technician visit. I do not want to downgrade to the X7. I just want somebody to help me fix the One that I have which is the XB8 and I’ve already read online. Multiple people have reported that Support claimed there was no issues on the back end provisioning until a Technician comes out again and then they find out that it really was on a back end and they needed a level two technician. Please do not make me wait 13 days just to find out that I need a level two technician I already know that’s the case so please help me