Poor support and customer service

Over the last year we have had two serious issues with Xfinity support and customer service. Earlier this year we had internet problems and it took several days, multiple calls, replaced equipment, and several tech visits to resolve. The last tech fixed it in about 10 minutes and said it was a simple fix as the internet cable into the house was connected through an amplifier in the demarc box that was for TV signal only. He was surprised the other techs didn't catch it. Ok stuff happens and we figured it was just an exception, not the way things usually work but still it took a long time to resolve and I think they gave us $10 credit because they didn't fix it on the earlier visits.  A few days ago our DVR failed. It powered on but did not work. We took it to an Xfinity store and they gave us a new DVR and talked us into mobile phone deal.  We walked out of there with a new phone and an iPad and the promise bill was going down by $16 a month! What a deal right? Well the phone didn't work. They set it up with a bad phone number. That took about an hour on the phone with Xfinity to fix.  We also found out that we had been switched to auto pay out of our bank account when we specifically declined that option when we signed up for the phone. That is supposed to be fixed but we'll see.  The iPad is ok. The new DVR box works too except it shows up on our account page as DVR 2. That point becomes important later in this tale of woe. While we were there the Xfinity store people said our extra DTA cable boxes were obsolete and we should exchange them for the new X1 type. The next day we exchanged one of the DTA boxes for an X1 box. It will not activate. we spent hours on the phone with support and no luck. At one point the agent said the box was probably defective but they needed to do something in the background that would take an hour and they would call back. They did not call back. Today we took the new little X1 box back to the Xfinity store and exchanged it for another and they gave us a number to call if there were issues. Well that little X1 box won't activate either, it has the same error. We called the number and actually got to a real person but could tell they were just following a checklist, "sending a signal" over and over. When asked they did not know what the signal was supposed to do, but that was the procedure on their checklist. They were very nice but not successful.  On the Xfinity website you can do a diagnostic scan and it shows we have two DVR boxes (DVR 1 and DVR 2) and five additional small DTA/X1 type boxes. And only the new DVR 2 is showing online, everything else is offline. And on our remaining little DTA boxes channels we have had for years are dropping off as unauthorized error code 580. Really we only have one DVR and 3 small extra boxes so the Xfinity system/network is showing the devices we have returned as active in our account.  DVR 1 is the broken one we returned. It is also set as the "main DVR" and it seems probable that any signals like the activation stuff going to the new little cable box are routed to the DVR 1 we no longer have.  Nobody at Xfinity we have communicated with thinks that is a problem or how to fix it. We do now have a tech scheduled to be here in a few days. We received an email confirming the appointment AND a charge of $100 for Technician Recovery?!! We got on Facebook and messaged somebody at Xfinity that we wanted to talk to a supervisor or something about getting this fixed and registering our complaint. They basically said "thanks for the feedback now leave us alone." For heaven's say Xfinity we have been customers since 1984 and this is how you treat us?