Online sales shocking

I tried to buy a phone online, from the Vodacom online store, a once-off purchase in full. I tried so many times my bank thought it a *****ulent transaction, so they contacted me. I assured them it was me. Then I phoned Vodacom, also numerous times. I spoke to about 10 different people, being put through from one to another, being asked to phone different Vodacom numbers and to email them. I tried them all, emailed them all, tried again. In short: there is a technical issue on their side, therefore I can’t make an online purchase, and there is NO other way to buy this phone. They can’t provide me with banking details so I can make and EFT and pay for it in full, nothing, no alternative. They then tell me to go to a Vodacom store, and the Vodacom store said, once again, that they can’t help because they are not really Vodacom, they are a franchise, and have nothing to do with the online store. You may now ask why I didn’t just buy it in the store in the first place, it will save me all the hassle. The reason: it is advertised as R1000 cheaper online than in the store. It is still advertised online, at R1000 cheaper, but you can’t buy it. At the end, after speaking to more than 10 different people, they say to me: “We can’t help you… it is clearly unpurchasable… technical issue… nothing we can do… it is not our problem… you have to do it yourself, we can’t help you in any way”. Vodacom advertises phones to buy online, but it is unpurchasable?! They have technical issues online and they can’t provide an alternative payment method, like EFT. They say it is our problem, not theirs?! I will tell everyone to stay away from Vodacom, they are not there to help you. You are on your own.