Online purchase delivery and order process much to be desired

After having issues of purchasing online due to the fact that you cant pay with ebucks and balance with another form of payment eventually had to forfeit the deliver as only a couple of rands short which was for the delivery, cant understand how you can purchase in store with 2 methods but not online. Surely if you want people to purchase on line you make it easy to purchase. After being told its a bank issue and lots of bank and forth told no you its only 1 form of payment. Now I keep being told the system shows delivery for last week then Monday then Thursday now suddenly only next week. This is utterly frustrating and totally unacceptable as we have organized kitchen installation around deliver of stove. How can they just keep changing the date to suit them. Online process does not work as delivery is not guaranteed at all you can wait and wait and just keep getting messed about and your delivery date just changed and pushed out. Makro online serve the worst I have ever used. Would not recommend it for appliances as Makro just seems to not care for online customers