Hacked home network (confirmed by pro), three routers in a row instantly breached

Hello,
My home network has been compromised and all of my devices rootkitted. I bought new devices and got a new router, and the same thing happened again. I am currently the target of an insurance scam and have had my ID stolen, among other things. I have attempted to get help from abuse@comcast, but as in every other case I have seen, they have not even responded once. No one in the store knows anything about cybersecurity, nor did the technician. 

Further, I asked to change my phone number on my account in-store because my phone was sim-swapped and the employee failed to do so, so when I went to setup my new router, my account had still been accessible to the scammers and they were likely able to breach it that way. The third time, I changed my password on the technicians phone, alas, I still got hacked again. 

My DNS, HTTP, and HTTPS ports are open and have been with every router. I can see that on the day of my wreck, 5 unknown devices joined my network. My laptop and phones are/were being mirrored; I have 5 uTUN that are not assigned to any legit processes on my apple devices that I believe are exfiltrating data. via open ports. 
 
I didn't know about the Public hotspot SSID until just recently,  were the scammers utilizing this somehow? I turned it off now (they should really give you a heads up of ANY extra threat to security no matter how small, yeah?)

Why am I unable to secure my network, and why is no one at Xfinity accountable for it or even trained in it?  I don't know what to do. I am injured from the wreck and I have about one hour of energy with which to solve problems each day. I can only securely communicate from the library and try to solve my problems. My ID is wide open and my digital privacy has long been decimated.