Deceived by Customer Care Representatives

I received a bill for $344.48 for early termination of a contract. I had bought phones in December of 2006 because my other phones were not working properly. At that time I informed the Sprint Representative that I would not buy the phones if it was going to renew my contract. I wasn't thrilled with Sprint's service but at the time I didn't have time to find a new provider. The representative state the he could sell me the phone and that it would not put me into a new contract. This point was discussed at length and I insisted that he add a note to my account about this not making a new contract, and he assured me he did. Later, I called back and informed the representative that I was not using all my minutes, and so I wanted to change my plan to one with less minutes, but, again I didn't want to enter into a new contract. I was told this was possible and so I changed the plan to one with less minutes. I changed to a different carrier two months ago. At the time I called to verify that there wouldn't be any issues in changing carriers. The representative asked me to stay with Sprint, but I informed him that I was not happy with their service, and I was going with another carrier. I verified that I wasn't under a contract, and he said no. Since I was going to be keeping my numbers I asked the representative if I needed to cancel with Sprint. He said No, the numbers would be imported to the new carrier, and if I canceled them then the numbers could not be used. Last month I received my "final bill" from Sprint. I called and verified that the charges ($81.74) were all that I owed. I was informed yes. I paid the bill. Yesterday (7/25/08) I received another final bill for $344.48 in charges for early cancellation of a contract on two phone lines. I called the representative and told her my problem. She stated I was in a contract. I stated I wasn't and after continued discussion I asked for her supervisor. I was transferred to the supervisor - Mark. He stated that no where in the notes does it reflect that I ever stated that I did not want a new contract started, not when I ordered the phone nor when I change the minutes. I told him that I had specifically asked these questions both when I bought the phones and when I changed the minutes structure. He stated that if there was any notes in the system he would be able to address the situation, but since there are no notes that the contract was "pretty iron clad." I informed him that I felt that the Sprint representatives had either lied to me to keep my business, or didn't know what they could and could not do when dealing with customers. I informed him that I have no way to control what is written in the notes of the system but I did carry on these discussions and I had changed my service to another carrier in full belief that I was under no contract obligation to Sprint. I don't feel I should be responsible for these charges, I feel that the Sprint representatives actively deceived me when I conducted my transactions back in December of 2006, and when I called to verify that I could change my numbers to another carrier, and I feel that they actively forged information in my account by not notating my insistence that I not enter into a new contract when I engaged in buying the phones or changing the minutes.