I continually get different answers regarding why promises have not been kept regarding my account

In January my internet bill went up dramatically.  I called in to Customer Service and was told that if I moved my cell phone to xfinity my bill would be dramatically reduced for internet and for telephone service.  Namely $70 for my internet with no reduction in service quality and $50 for my cell phone and that due to a special promotion Xfinity would pay of my balance on my Verizon phone and tablet.  I agreed and the representative disconnected my phone immediately before he provided me with information on how I activate with Xfinity.  I called in and was transferred around until finally a representative advised me to get on my mother's hot spot and walked me through activation.  I did so from a parking lot after having been without a phone for several hours.  The next day I called back to confirm that my phone and tablet had been paid off.  I was told by the representative that it would not port over unless Xfinity paid the devices off so not to worry.  A few weeks later I received a bill from Verizon and that my tablet was not deactivated at all.  I deactivated it with Verizon and confirmed that Xfinity did not pay off the devices.  That I was responsible and that they were going to take $1158 out of my bank account to pay for the phones.  I stopped the EFT and called customer service at Xfinity and was advised that they do not pay Verizon direct but instead send a prepaid visa and that I needed to upload the bill.  I uploaded the Verizon bill and waited.  When I didn't hear I called service and was told I needed more description.  Verizon provided a detailed explanation, and I uploaded it.    Every couple weeks I called to ask if the funds had been released.  After a month I started getting menacing calls from Verizon and charged the balance to prevent collections.  Each time I was told it was taken care of and I needed to be patient.  I waited another week and called or chatted again.  I am now three months out and have not received the money.  Additionally, I did not get the price I was promised and when i called to find out what was wrong, I was told I was going to have to take slower service to get the price they promised me even though I had in writing that nothing would change.  When I went to the store, they advised me to always come there because the call center doesn't tell the truth.  After waiting an hour to speak to someone, they told me they were closing and could do nothing to help me.   I have been lied to by so many reps that I am ready to go to small claims court.  I have been told that billing is the highest level of customer service.  That three of the four ticjets set up on my file were done wrong and that basically I am out of luck.