IS THIS COMPANY LEGITE and what are they for

Received a call that we may be entitled to some money back from having a mortage with the bank. Told them we did not have a mortage and the guy said it would not help me then . I told him that this was a scam and I was going to report it to the police. Hung up and then I called the number to see if it was legite- the number was 978-570-2418. They asnswearedby the name pro something ( not sure of that name )  and said to avoid furthur calls from them to push one.  I pushed one and hung up.  I then reported it to the police .  Am I going to get chrged for something or can they use my phone number, etc. I did call from a phone using a phone card.