Appalling, disrespectful, unprofessional service

I upgraded my device at he vodacom shop in cresta. It was one of those 2 for 1 deals (both LG devices) the main device for the package (LG V30) was fautly within days of use. I took it back since it was within the cooling period, I was advised the process would take a week. The week passed with no feedback from vodacom. I went in again to find out what’s happening and I was advised that they are still “investigating”. I decided to cancel the upgrade but another consultant convinced me that she’d get me the same deal with another device (LG G7) and the free one would still be the stylus3. It sounded like a good deal and I took it. I got the G7 but the stylus was apparently on the way from another store. The consultant said it should take 24 hours, she also added on that if it’s not there in 24 hours which would’ve been on Friday she’ll call me to pick it up on Monday. The day came and went with no communication. I spoke to her last week and she said the device would be ready for pick up last week Friday of which I told her I won’t be around I’ll come and take it this week. I’m from the store today and they don’t have the device. I was told that they can’t commit to a timeframe after all this waiting game they have put me through. When I told the consultant that I’m paying for this contract he told me that the other phone was free which means he is insinuating that it’s not important since it’s free. The service I’ve received is nothing short of appalling. Once again a consumer has been given the short end of the stick from Vodacom