No refund, and still trying to charge me for inhome Tech service.

In late November 2023, we were having issues with our internet as well as our phone. Call customer service and after going through multiple reboots, and sending signals, I was told perhaps it was becase I had not yet paid my December bill. I said I had paid it through my bank bill pay service, and it was going through on Nov. 28th. So, he offered to have me make a payment over the phone, telling me I could either cancel my bank payment the next day, or leave it and they would simply credit towards Januarys bill. Also was told my router was an older model, so they sent me a different router. The new router arrived, I followed the directions and could not get it to work at all. So, called customer service and they tried repeatedly to get it going with no luck. Said they could schedule me for inhome Tech, so they put me on a 24-48 list incase of any cancelations. After 72 hours I got the new router to work, but the phone wouldn't work, and the signal was weaker than my original router. So I called and spent a few hours with C.S. again, finally they said they would send a Tech with no charge to me, since I'd been dealing with olutages and problems for so long. The tech finally said the cable coming into the house was not up to date with what they now use, but he could splice into it with new cable inside (didn't want to mess with the line coming to the house from the pole) and install a wifi router which he felt would resolve the issues. Got everything up and running. But, then my January bill arrived. They took the second payment I had made, and charged me a $25 dollar fee to return it to my account, plus had $100 dollar charge for Tech and instalation, which I was told I would not be charged for. After hours on the phone with C.S. they gave me a credit for the $100 charges. As for the extra payment, I was told it had been returned to my account. I assured them that it had not been returned to my account, and that the last 4 digits of the account number they said they returned it to, were not my account numbers. I was transfered to the fraud devision, who first said I had probably not called the C.S. number and had probably used a fraudulent number from Google. I told them that was not the case, and if I had infact done so, how was this person sending signals to my router, and resetting it multiple times as I was speaking to them, and also had my  paper bill sitting before me, as well as my online account show both payments, as well as the $25 charge to return them to a different account number than mine. So, they opened a case to look into it. In the meantime I was told to go to my bank and get a printout showing no money had been returned to my checking and they would be sending me an email with a link to upload that statement. After a couple days I got an email saying the case had been closed, with no explanation what so ever. So apparently I am out the $230.54 payment that was never returned to my account, and...Feb. bill arrived and they had added a $40 instalation fee again to my account. Simply unbelievable, and might I add I have been a customer for over 47 years.