Unauthorized Debit Order

at the end of June I noticed a Debit order went off my account only to find out that a company EC finance has debited my account. This was Unauthorized as I did not apply for a loan or anything of that sort. Since June to date 06 Sept 2017 I called literally a 100 times, emails on a daily basics and Marius does not respond. All I want is my money back. This is ***** and im pretty sure they are doing this to alot of people if they avoid taking calls, responding to emails but most importantly returning the money back.