Poor online upgrade service and lack of communication

Hi, i upgraded online on the 02/01/2019 and was then assisted via telephone to finish the process and was advised the delivery will take place in 3-5 working days and so I waited. 5 days passed and no communication from Vodacom and I called and was advised that they made a call to confirm the upgrade and no answer from my side however I gave them an alternative number and with the follow up call they didn’t know the number..so I reconfirmed it again and waited for the call, two days later still no call I called in and was only then told that the phone requested was out of stock and will only be made available in two weeks. After a whole week and a half is now only you advise that the phone was out of stock, horrible service. And now have been waiting still no communication from Vodacom.. better if I had gone to the store really.