No debit but calling and saying im in arrears

Direct axis has been calling me at work and on my cell saying im in arrears but have not debited my account. This has been happening for about 3 months now.

Everytime i explain to the consultants but nothing happens. They attempt maybe 3 times to debit and find some fail until they succeed but they are not pinning down the actual fault.

They said my bank had an issue i went to the bank and they found no fault on my end.

I can not be expected to eft my payment every month. Our agreement was that there be a debit, there are funds in my account but no debit, instead i am being harassed 3/4 times each month by consultants. I have sent emails still no feedback. I even called the *** asking for a manager and was placed on hold for almost 20 minutes. Im sorry but this is ridiculous, i love direct axis but this is too much . You guys need to fix this mess. This is not my first direct axis loan with the banking details I have so I really do not understand what could possibly be the issue now. I AM TIRED OF EXPLAINING MYSELF TO DIFFERENT CONSULTANTS…WHAT IS GOING ON DIRECT AXIS!?