None existent service at Vodacom

We have been trying, nearly 4 weeks now, to do an upgrade on our contracts without any success.

1) The 1st order was just cancelled without informing us 2) The 2nd order was placed but instead of completing the order for 2 devices, they only placed an order for 1 device. 3) After a week contact was made again only to be informed that no stock is available and stock would arrive later that week. 4) We made contact again after week just to be informed that the stock has not arrived and they are unable to tell us when stock will arrive, probably the end of the week on Friday. 5) Phoned Vodacom again to follow up on the order to find out, again, that an order was placed for one device only and not two. 6) Phoned again today with our query and was passed from pillar to post and no one can help us, or seemed willing to help us to the point where we actually phoned Vodacom to CANCEL both our contracts and even that was unsuccessful as no one answers or when the call goes through it just gets dropped immediately.