contract

I had 3 sprint phonesI sign no contract and the girl did not even explain to me any a thing about a termination fee or how long I had to stay with them just said the phones were discounted because the new ones had come out and she put everything possibly she could on my Dell I paid seven hundred and eighty dollars for 2 months of service and they're telling me just because I got a phone or discounted price I locked into a2 year agreement wow that kind of sounds like a crook