EFT clearance

On the 23rd of November, I made a ATM deposit for a online order I placed the previous day at the Musgrave Branch. On the 27th, I decided to contact the company to ask why I haven't received an EFT clearance from them since it's been 4 days after the deposit . They asked for proof of payment and I did forward them but only to find out that from their side the payment still haven't cleared. I'm highly disappointed at Nedbank's service specially for something they claim to reflect immediately after depositing the cash. I've checked with the company again and still no clearance on the payment from their accounts department. Nedbank is the worst banking service I have dealt with so far.