Debit Order Dispuits not reversed

Debit Order Disputes not rectified. Its been a month waiting for feedback, i called FNB bank ref: RG ********** 760781 and emailed, submitted forms on email. Physically went to Carlswarld branch on 31/03/18 filled another form for the reversals and was a told within 24 hours they will be reversed. Since then i still havent heard from them. Today i called to follow up. The lady could not assist and was advised to give them another week. Its frustrating that i have been waiting for this long and filling out forms for nothing, and it doesn't look like any action has been done since i have queried this ***** debit orders.