Bad service

Really bad service.I have been trying for more than a week to do an upgrade,have to go back to the store every time just to be dissapointed.. How can your upgrade date just change? From May 26th to July 1st? The first time there was no stock,the second time the system was faulty,and then the third time all of a sudden the upgrade date has changed !!!! *** !!!! And yeah the consultants arent really going out of their way to see what the problem is,they say they will call you when everything is sorted which was supossed to take between 1-24 hours,4 days later you call them just to hear the same thing and then wait a whole day for no phone call ,then eventually go to the store to hear that they couldnt call you back because they lost your number,and that your upgrade date changed so come back at that time which will eventually lead to there being no stock again!!!.. Have been with vodacom for more than 10 years,and this is pathetic,I have a good mind to cancel this contract and go somewhere else... Seriously you cant just leave work to go to vodacom everyday when its convenient for them .