Payment not yet credited to my account

I processed a Debit Card payment on 03/11 from a Standard Bank account holder - my account is also with Standard Bank. This amount has not been credited to my account. My client obtained stamped Proof of Payment from Standard Bank Kilarney confirming that the amount was indeed debited to her account.<br> I emailed Greenstone Business Banking on March 15, requesting their assistance. After a bit of a run around, Sindi (Business Banker) finally undertook to contact Merchant Services to sort it out. <br> She confirmed that the money would be reversed back into the customer's account, and Sindi undertook to email me when done. I haven't heard another word.<br> The client is adamant that the money has not been credited / reversed back into her account.<br> I sent a follow-up email, but have not received a reply. <br> I've tried calling, but the Greenstone Business banking number rings without answer.<br> Surely it doesn't take this long to resolve an issue - we are both STANDARD BANK customers.<br> <br> Could someone please contact me urgently.<br>