DEBIT ORDER

I AM UTTERLY DISGUSTED BY TRACKER ,I have a tracker unit in my vehicle,since 2018 ,April 2020i reversed the debit order that was debited on the 25 of April 2020 due to lock down. i arranged with Tracker for double debit for 25th May for the amount of R312.00 AND THEY DEDUCTED NOW THEY ARE HARASSING ME SENDING ME SMS'S TO PAY R156.00 AND I DO NOT HAVE ANY OUTSTANDING AMOUNT ,THEY NEED TO FIX THIS ASAP BEFORE I TAKE THEM TO OMBUDSMAN I DON'T LIKE TO BE HARASSED I HAVE THE COMMUNICATION VIA EMAIL WHERE WE CONFIRMED THE ARRANGEMENT AND THE SMS FROM MY BANK I CAN EVEN PULL UP THE STATEMENT. I DON'T EVEN KNOW THEIR DEVICE IS WORKING I NEVER RECEIVED ANY CALL FROM THEM THE ONLY THING THEY DO IS TO DEDUCT MONEY FROM MY BANK