Arris SB6183 - 4 phone reps couldn't activate modem

Hi,

TL;DR at bottom

A recent thunderstorm has hit my business and fried the existing SB6183 that has been working for a year. When I went to purchase a new SB6183, the agents have been having issues activating the modem. I’ve spoke to 4 different phone reps and they all had different answers to my problem.
First, they wanted to schedule a tech visit to see if there was a problem with the line. One tech came and claimed all the diagnostics look good. So I went to buy a new modem and set it up exactly like the last. 

The new modem is able Toto connect to the node just fine as all the lights are solid and the signals levels look good. I am directly connected to the modem and have no internet. My downstream levels are -4.6 dBmV at worst and -3.0 dBmV at best which is well within specifications. Signal to Noise ratio is 40+ across all 16 channels. My upstream power is 39 dBmV minimum across 4 channels.

I am stuck at the activation portal which doesn’t seem to allow Comcast business users to log into. So I called the phone again and the second agent could not even see that the modem is online although I am able to get redirected to the portal page whenever I try to access a website. The rep tried to re-add the MAC and model but still no success.

I tried to call again later but the third rep says they need a technician to come out and look at it. It has been almost a week without service and we are losing revenue.

Ive tried calling again the day after and the rep said he is unable to add the device to the account and needs to contact a higher department which I won’t receive a reply until 5 business days. 

Since this is my own modem, I believe the tech visit will be useless as the previous tech tested the line already and said it was good. My modem is able to connect to the node, but I can’t activate it. I can’t restart my modem from the Comcast business page and the phone reps can’t see that the device is online either.

What are my options to get this resolved ASAP? 

TL;DR SB6183 is unable to get activated by phone reps. Some solutions the reps tried: re-adding to account, scheduling a tech visit, making a ticket for upper department.