Terrible service - Missing Funds

My Woolworth store account has been handled by their collection team (MBD Collections) since from December 2017 my account is being debited by R570.00 on the 23rd/25th monthly. For the month June the debit order of R570.00 went through successfully and did not return as unpaid as there were sufficient funds in my account, further to this I made and additional payment of R180.00 via EFT to Woolworths account, I did this in order to clear the arrears on the account. lats week I got calls from two ladies from MBD asking why I did not make a payment meanwhile my account was debited on the 25th. I explained to Cindy Ramparsad who then requested that I send the proof of payment of which I did and she advised that the supervisor will contact me as they are looking into the problem. I followed up as there was no response or update and I also called Woolworths and spoke to Nafpisa who gave me the email address - the info required was forwarded accordingly but still no one knows what happened to my Funds. Today I got my statement indicating only an amount of R180.00 paid but the R570.00 which was debited on the 25/06/2018 isn't allocated to my account and it was not credited to my account either. Woolworths/MBD collections can you please tell me where my funds are. I'm really concerned, over and above I'm not irate by this. This is terrible and *********** I need this resolved as a matter of urgency and also rectify my statement, there shouldn't be any arrears as I would have paid R750.00 last month and the expected amount was +-R738.00. Please resolve!!!!