Billed $100 for technician fees after Xfinity performed maintenance and disabled my internet for days.

On September 2nd, 2025, Xfinity performed maintenance in my area, my internet was out during the day but it was eventually restored. They informed me on September 3rd, 2025, that more maintenance would be conducted in my area, and my internet was out the entire day. My internet connection was spotty and unusably slow (0.0 - 0.5mbps download speed), and I contacted Xfinity to see what I could do.

I was informed that I may either need to have a technician come by to look at the wires, or could try obtaining a new modem from the local xfinity store at no cost to me, and actually at a lower promotional rate reducing my bill from ~$140.00 down to ~$80.00. At no point was a technician fee mentioned, and at this point I did not need a technician to come down to fix the lines that they messed up. 

I picked up and installed the new modem, and found that the issues with download speed and connectivity persisted. I contacted Xfinity again and after approximately 4 different phone calls spanning multiple hours, I was informed that a technician would be available to come look at the lines on September 5, 2025.  Again, at no point was an installation fee communicated to me or reflected in any of the emails I received concerning the new promotional rate. 

The technician was ultimately available to resolve the internet connectivity issue that day, which I appreciated, however I have now received a bill that is actually higher than the rate I paid before (it is ~$147) instead of the $80.00 I was told would be reflected on this bill. 

I need assistance with resolving this. It is unacceptable to tack on a surprise charge of $100.00 that was not communicated to me, especially considering it was to resolve an issue that Xfinity created.