I have a contract with Verizon. The bill got too expensive for me so I elected to cancel my service. I was told I had to pay 775 to buy out of the contract. So last week I get a bill in the mail for 1200. So I called them and asked they said I had a outstanding balance of 500. So I asked them for copies of the contract I signed and they provided 2 current contracts and 2 that expired in July. I called back and asked for my updated contracts for the 2 lines I updated in March. They said they would email me them in a couple minutes. I never got them. I just received a contract in the mail that had my info on it but not my signature. Is this contract still a legal binding?