loan shop online llc express loan unauthorized transaction on another account Wilmington, Delaware

They say I took a loan out over a year aga from this company. I had went through alot and decided to move to Texas. I have another account opened. They received my information from a third party (unsure/ under investigation) and decided to debit my account unauthorized for 390.00. There wasn't a phone call, a letter or anything to let me know. They said "In small print your original application states that if we obtain new information from another party, we will debit that account as well". Can they do that? That is very fishy!! Im fighting them to the end on this one. At least let the person know you have there informaton and what your planning to do, I got nothing, zip.