"Be rest assured, no worries" over and over and over. Problem never fixed.

back and forth between tech support, customer service, and experts. I am a new customer with ATT U300 service starting 7/3/18. I was given promos for a bundle package price for U300 internet and TV. part of the package was 3 mos. free of HBO. On 8/7/18 I requested that HBO be canceled because it wouldn't be used. HBO was then canceled remotely.  A couple of days later I received a message stating that my order was being shipped. I had not ordered anything (other than the HBO cancel)  I called ATT and was told a new receiver had been shipped. I asked if the order could be canceled because I didn't order a new receiver and didn't need a new one. I also didn't want to connect a different one and ship the original one back. I have a life like everyone else. I was told the order would be canceled. I received a new receiver. I then asked if I could just ship back this new one. I was told yes. I shipped back what they just sent me and UPS showed it was delivered. On 8/21/18 my receiver wasn't getting a signal and I was talked through the fix until the TV displayed: X3. Completely disabled. They would send a tech to my place with a new receiver.  After the tech (a big, huge guy. I was terribly uncomfortable). connected a different DVR and left my ATT TV was now downgraded to U-Family.  Unless you have two year olds running around and they are the only ones who watch TV U-Family is pretty much pointless. You can't even get the TBS channel. I'm sure this is by design. I called ATT to ask that U300 be restored. "Sure! Rest assured, no worries". Orders on the ATT website would be made and then canceled. Not canceled by me. I saw orders for U300 Latino, and more orders for U Family. I am not Latino but I said por favor please U300. They did issue me a credit of $63.00. they also informed me, more than once, that my monthly bill would be increased by $5.00. I guess so they don't have to be concerned about the $63.00. This last order is showing still in progress since 8/29. All of the previous orders to restore my service back had went from in progress to canceled. Except for the U-Family order, that I had not made, which did show complete. Honestly, I don't know why anyone who works at AT&T, answers the phone or responds to a chat. Nobody knows anything let alone care. I've been told model numbers don't matter. The one listed is different than the one I have.There is also a message telling me that ATT is detecting a device not connected. Probably the device I returned. "Computer generated" they say.  I think they like to show how very rich and powerful they are. I have a message for the King. May I please speak to the King? I was at one point given a case number. A case number it turns out, means absolutely nothing. I can't tell you how much fun this has been.