DirecTV Lied to make me stay a customer

Called in November 2018 to cancel as I was going to move and wantedc to get cable.  Customer retention member called me back later that day and negotiated to get me to stay.  I clarified the information and asked more that twice for him to tell me the details so I didnt mis understand.  He told me he would include the move, new reciever with 4 wireless recivers for free.  He told me no contract and the price would be $29.99 a month. 

When I checked my first bill it was higher but I suspected it was for the quarter of the month before the changes were made.  My next bill was almost double the negotiated price so I called to check if there was some hidden fee.  They told me $29.99 wasnt possible and there was no way the Customer Retention member told me that.  I asked for the notes to be pulled from that day as I asked the Customer Retention member to add it to my notes for my sake.  They told me today that the note wasnt in the file.  On top of it I would have to pay over $400.00 cancellation fee as there was a contract that I never agreed to. 

It seems lately there has been more and more of this since AT&T bought them.