verizon did not honor what they offered me Newark New Jersey

back in september 2017 sprint gave me an offer to change over to their service, when i called verizon to tell them about it verizon said they could match it so i called sprint back up  and told them i would stay with verizon 1 week after the introductory time i got a bill and it was the same as before since then i have been calling verizon to get set up the way they said it would be and finally today on march the 8th i was told i could not get the program i was promised, so i said fine let me out of my contract and they said no i was still responsale to pay out the contract even though they did not stand up for what they offered me