Keeps on canceling my orders

I was always a huge fan of takealot but now I'm getting fed up. when i order and part pay with ebucks and then emmidiatly pay the rest with eft. This is now the THIRD time my order gets cancelled because you did'nt receive the ebucks or payment. and everytime I have to re-order. This is wasting my time. Getting so tired of this. Really how can you just cancel MY order after I spoke to a consultant who said she will apply the credit to the order. So frustrated and with the fact that everything i want to order is OUT OF STOCK FOR WEEKS!!!!! You canceled tis order twice after ebucks went through and I also paid so what the hell now. Must I reorder for the 3rd time? Just for you to cancel it again AFTER I PAID. I'm definitely looking to rather find these items elsehwere. So if you can't figure this out then dont just give me a credit and not shopping with you again.