Charged $100 for a tech visit without warning!

I just received my bill for January 2026, which includes a $100 charge for a tech visit to my home that is completely inappropriate. My household has been struggling with internet that is FAR slower than what we have been paying for for MONTHs, and it has been completely impossible to get customer support through Xfinity's entirely useless AI chatbot. Finally, our internet went compeletely out for nearly a WEEK after we noticed Xfinity technicians near our apartment building (not through any request from us), and we were eventually able to get a technician to come out. There was absolutely NO notice beforehand that there would be a $100 fee for the tech coming out, and the tech assured us when he was on site that we would NOT be charged for the visit. Just before he arrived in our apartment, the wifi turned back on suddenly (although it is still extremely slow). The tech didn't actually need to do anything, he was in our apartment for less than 10 minutes, PLUS the equipment we use is XFINITY equipment, and the outage was most likely due to the Xfinity work that was happening in our area coincidentally with the outage -- and yet we're being charged $100 for the visit, and I have to take time out of my day to file this complaint??? The customer service and wifi has been terrible. I expect a full refund on the $100 that I was charged without notice or reason. It's ridiculous that big companies levy these fees on us without any warning expecting that most working people don't have the time to push back! I want a REFUND, not a bill credit.