Bait and Switch with respect to billing

Hi all, I recently moved to Boston. The apartment complex I chose to live in allowed either Comcast or Verizon Fios for the internet. I chose the lesser evil and decided to go with Verizon and tried to sign up for an order online. I got a monthly bill of $49.99 (inclusive of the router renting fee, see following image) and they waived the 'one time' set up fee. However, somehow my order didn't go through. I got a message to contact Verizon for finalizing the order. I called and spoke to a representative named Greg (last name withheld) who said he couldn't find the order and that he is going to start a new order for me. Also, because of the inconvenience, he is going to offer a $20 discount for the first 4 months. . A week later, I received a notification about the order and the first bill was for $150 (before Verizon set the internet up at my apartment). I called and the representative confirmed that Greg has left notes about waving the setup fee and honoring the online pricing and that it would reflect in the first bill that I would receive after the setup. Also, that the notes said a discount for $20 was offered for the first 4 months. This all was a week back.

Cue, to today. I got the internet set up on July 28 and received the first official bill today which was of $150. I called and the representative who answered told me that the best they could do is waive the $90 set up fee, there is no way they can do anything about the pricing. When I insisted she said that I should email Greg directly and ask him about the pricing. Seeing that I was going nowhere I asked her to transfer me to her supervisor.

The supervisor decided to give me the actual online price ($49 pm) only when I told her that I have the original order number. And, she also told me to contact Greg directly, claiming that I should talk to the guy directly and that she had no notes from him. When I told her that I could forward the email to her, she said, "that is not possible". This is funny to me because apparently according to Verizon it is the customer's job to keep a track of what the representative tells them and then they have to try to get in touch with that particular person. I can't say that I am surprised at this bait and switch. I think Verizon representatives have a tendency of offering a pricing just to acquire customers. I have already spent 4 hours on the phone with Verizon to no resolution. I have come to the conclusion that there's no point talking to any of them as they would always claim no records/knowledge of any phone conversations. Is there any way I could escalate this, something similar to an email chain?