Online upgrades don't work!

I have been trying for the last two weeks to do my upgrade online but have been unsuccessful even though the system says it's gone through and has allocated me an order number. I have phoned the upgrade the call centre multiple times to try and sort it out but have had not luck with them either. I keep getting told that my number is on the legacy system and that only certain people can access. Ever time I'm told this the operator promises that someone will call me back immediately. I have received one call from someone who said that they can help process the upgrade manually but then couldn't give me the same price as advertised online as the package I want is an online exclusive so they wanted to charge me more. The operator promised to look into it and come back to me. A few days later and still no response. I have been a loyal vodacom customer for almost 20 years and this is how we get treated. Shame on you vodacom!