Incorrect debit order

I recently took out a long term loan. The debit order information was filled in correctly. For 3 months now I have spoken to the consultant and nothing is being done in regards to the following - the debit order runs in the middle of the month on a account I did not give them, then I get billed for insufficient funds and the consultant promised I will be refunded and once again noting and still the debit order runs incorrectly. How *********** are you!!! Now debt collectors are phoning me because of charges not even my fault. I will be contacting the ombudsman in this regard