iStore Sandton Drive bad service

Istore has launched a scheme called Istore flex which allows you to finance a device without a cellular contract. About a month a go I found this out and I enquired about putting down a deposit and financing the balance. The answer was yes. I went to iStore Sandton drive yesterday and once again confirmed this was ok and I was again told yes. They explained which documents were required and I was to return today and we can get the ball rolling. I returned to iStore Sandton drive today, docs ready and deposit ready only to be told by them that they don’t accept deposits as part of the Istore flex finance option. I have now wasted time and fuel 3 times. Why won’t they accept a deposit?? This is someone actually trying to give you money and you don’t accept?! Business must be booming for you to turn away paying customers. Highly annoyed.