No customer service for existing clientele

have been trying to do my upgrade, with no success. I tried at Vodacom shop, and was told it would take 3 days, but didn’t hear from them for over a week. Then I tried online, on the 1st of Feb. After putting my order through, I then realised it was going to my home address instead of my work one. So I called in and the lady in the call centre changed it and confirmed it would go to my work address. The following Monday, I got a call from Vodacom and my order and work address was reconfirmed. I then got a call from the delivery guy from Ram who didn’t even talk in the phone, he just kept ringing me and putting the call down. My parents then phoned to say that Ram had just tried to deliver at my home address!!!! So I phoned Vodacom and the call centre person said the change of address was not sent to the courier!!! I then contacted Ram and rescheduled. Low and behold, it was redelivered, again to my home address!!!! I phoned vodacom and they told me it would be rescheduled. Then a text came from Vodacom asking me to reply with 1 to get my order rescheduled, which I did, then nothing....... I then contacted Vodacom, my order was apparently cancelled due to none delivery. The agent then tried to reset up, but now an upgrade at a higher price to what I originally ordered!!!!!! She then told me to email a specific email address with the original order, which I did and I also emailed the customer care, Still nothing!!!! In the interim I received my monthly invoice, and instead of the usual amount, it has now increased by an extra R300! Do I want to call a call centre that is inefficient and do not actually sort the issue out???? I think not, what’s the point when the only point of contact is a call centre which doesn’t do anything!!!