***** on my bank account

I would like to know how does clientele verify banking details from there clients. I do not have any funeral policies or any policies with clientele but monies was deducted from my account when i called in to the customer service line and provided them with my id number they could not pick me up on their system. a consultant asked me the reference number on my banking app and when i gave the reference number the info was not mine but a Porche. i asked the consultant where they got my banking details from and how was the debicheck approved as did not receive any sms for authentication accepting the debicheck. i advised that this is ***** as both the bank and clientele needed my approval and secondly where did they get my account number from. all i want from clientele is to reverse my money back into my account and secondly remove my banking details. when i advised that i need my money the consultant advised that i need to wait 10 working days as they are busy investigating this matter i cannot wait 10 days as i need my money and ***** was taken out on my account. how does your debicheck process work and what contact number do you have on the system for porche. i want answers and if my money is not reversed in my account i am going to the Ombudsman.