Bad experience trying to sign up for promotion

I just wanted to vent my frustrations with an ordeal I had to go through recently with a promotion for 5 year price guarantee through Xfinity. After ordering I was told to come pick up my equipment at an Xfinity store. Since I was on vacation I called customer service that I couldn't come in during the timeframe to pick up and activate my service. The customer representative put a notation on my order stating that I would be back on April 13th to pick up. Today is April 13th and Xfinity cancelled my promotion ($40 price guarantee /5years) despite the representative assuring me my order is valid until this date. I was a previous customer that wanted to give Xfinity another chance, but it seems I'm left with the same bad experience I had before. Tried calling customer loyalty and they offered me current rates which are of course much higher LOL. 

I was a previous customer who got since of the price increases, thought I would give them another try  due to this promotion. I guess there was a good reason why I left in the first place.