Comcast made me an offer over chat and will not honor it.

Over the last two days I have chatted with Comcast representatives Sanja, Prateek and Alex and then over the phone with Nick.  I have screenshots of my conversation as I realized Comcast doesn't appear to capture these which blows my mind.  Sanja made me an offer yesterday (8/15) and text me the agreement which I approved.  It did not go into effect which let me to reengage today.  Today Prateek, over the course of 30 minutes agreed to the offer and then transferred me to Alex.  I chatted with Alex, who assured me several times the offer would be met and I would be very happy, for 90 minutes at which time Alex transferred me.  I disconnected after over 2 hours of my life gone.  I just got off the phone with Nick who was unable to provide a similar offer and we parted ways.  I have been with Comcast since 2015 and have never run into something like this.  I would like it to be resolved.  I have the contract texts (the links now say there is a problem) as well as screenshots of my chats with 3 Comcast representatives all assuring me of my satisfaction and thanking me for my patience and loyalty.  Am I being overly patient and overly loyal?