Vodacom Poor Service

On the 1st of December I did my upgrade online through Vodacom website. After 3 days of net getting any confirmation, I phoned Vodacom. They then told me the upgrade did not go through because the phone is out of stock or discontinued. I then changed the upgrade via telephone to another contract and device. A week later they came and delivered the phone, but then sent the wrong phone. After a long conversation and trying to explain to the lady on the other side of the phone about the situation she then said she will send the courier to come and pick up the wrong phone that has been send and then 3 days after pick up we can do the upgrade again. On the 15th December, they came to pick up the phone. 3 days later we went in store to Bloemfontein Loch Logan Waterfront Vodacom 4U to do the upgrade again, they then told us that the phone was not yet in the warehouse and they will phone us the Monday of Tuesday and then we can come pick up the upgrade. Tuesday the lady from the shop phoned and said the wrong phone has been scanned into the warehouse but they have to wait for head office to reverse the upgrade, so that they can do the new upgrade. We are still waiting, everytime we phone, they don't answer and if they eventually answer, they say the phone is not in the warehouse yet, then the other person say the phone is in the warehouse but they are waiting for the reversal of the upgrade so that they can do the new upgrade. Everytime it is a different story. We have logged a query at the call centre, who also told us the phone is in the warehouse and they will do the reversal and it will be resolved within 48hrs. We received a sms saying the query is resolved but still we are not able to go and pick up the phone, because now the lady at the shop is saying again the phone is not yet in the warehouse. Another lady phoned and said that they are busy sorting it out, because they have to wait for the reversal from head office before they can do the upgrade again. According to my tracking of the wrong device, the device was in the warehouse already on the 17th of December. Everytime we log a query to do the reversal, then head office says it will take 48hrs, then we receive a sms saying the query is resolved, but still nothing...I am really not happy with the service from Vodacom and are on the verge of canceling all the contracts we have with them.