Was given an incorrect Reference number.

on the 28th of March i called in incredible connections requesting for a settlement, the settlement statement was emailed to me buy Thandi Mhlungu with my details, i paid up SAME DAY the funds due which R8724.48. through Capitec. Prove of payment was faxed and emailed but for the past 2 months after paying i have been receiving phone calls from their call center telling me that i am owing them . it came as a shock to me, i told the Agent that i have paid up the account and i am not owing JDG anything. With none stop of phone calls that i received everyday till date, i went to the Eastgate branch on the 1st of May to inquire, the guy who assist me told me i was given an incorrect reference number the R8724.48 was paid into someone else account. have tried to call into the call center no one seems to care and do a follow up. What really angers me is that its not my fault that they gave me an incorrect reference number. I WORK MONDAY-FRIDAY FROM 8:30-5:30.the last person i spoke to about the matter told me that no one is doing anything about it. This is affecting my credit record.I am really ****ed and will tell anyone i know how bad the service is. They are quick to take your money.