EZ Loan Protection took out money out fraudently out of my checking acct Internet

I got an email from EZ Loan Protection about a free trial for 30 days. The same exact day I emailed back and told them I did not want their services and take me off the list. Two days later I check my bank acct on line and find an unusual numbered check and clicked on it to find that they had withdrawn 30.00 from my checking acct. The only way they could have gotten my information was I had applied for a loan on line and apparently the companies I had applied at had given out my information, bank acct number, etc. I immediately emailed the company and said I wanted my 30.00 put back in my acct immediately or I was going to file a fraudent report with my police dept. I got an email back later that day saying I would have the money put back in my acct within 7 to 10 days, still no money nor do they have any intentions of refunding my money