Incorrect Debit Order Collection

I had requested debit order changes in November as I changed employment and thus changed days on which I got paid. I alerted Miway timeously about these changes. Debit order went off with a prorata fee and then on then still after that there were 3 debit order attempt yet I had not been paid. This resulted in FNB charging me R180 per debit order attempt. I called miway to ensure this will be fixed. Spoke to Lindiwe Mazbuko sent her my bank statement to have these charges corrected by Miway as they attempted to debit on the wrong dates. Refund was scheduled for December. Which I did not receive. Followed up with the call center in January and spoke to the same person, sent another email and still no refund. Today is the 3rd Collection and no refund in sight?