Sudden huge increase in internet data usage

I have been a Comcast Xfinity user for 25 years, and have never had huge issues with their service other then feeling their prices are too high.
Well now I strongly believe and see that they are trying to force us to pay more for unlimited Internet.  I have never gone over and nose they are falsely charging me me more for Internet usage that is ridiculously high. 
It started inMay of this year my Internet usage like ridiculously 3× To 4x My normal usage.  On May 24 my usage spiked 4633 GB of 1229 GB, June 4692GB of 1229 GB, July 2525 GB of 1229 GB, now in August 12th 1481 GB of 1229 GB. 
I have never gone past my usage amount. Ok.  
I have gone to the loyalty team, multiple levels of support, they tell me that they will call me back with an answer, and never follow through.
I am 12 days into my new August 2022 billing cycle and am at 110% of my allotted usage. 
all through Covid my wife and I had to work from home we were on multiple teams meeting watch Netflix plus had my streaming Xfinity in my room never did I ever get close to meeting my allotted 1 to 29 GB of Internet service. I have not done anything different other than change from my personal Netgear modem to using the X one modem in efforts to see if it was true what they were claiming. Their escalated level Support had told me that it was due to my Netgear nighthawk modem and I would need to use the x1 modem.  Well I have swapped out and am in my second month using the X1 modem with no results, I did read from different blogs on the Internet that Comcast Xfinity has falsely charged customers with additional usage attempting to get them to go into an unlimited plan. I refuse to do this because I know that I am not going over my limit. they have no way to justify this. 
I have multiple IH support tickets for this and now they say there is no information for the ticket # I give them.  
I am looking to move to Tesla Internet service Starlink when it becomes available in my area or am looking at a different Internet service.  Has anyone had any luck filing a claim through the FCC or government agency.  
I am Veteran and they thank me by wanting to screw me over, I am tired of making phone calls and being told that I am going to pay for over usage fee’s.  
i am looking for other solutions.  Any advice from anyone out there would be appreciated.