Greenstone Vodacom, your service level is dropping

I did an upgrade with Vodacom Greenstone and was promised to have my sms bundle removed from my original contract. I was promised that it was going to be removed by your consultant. I went back k to the store where another consultant said she would get the original consultant to get back to me. I sent an email to the store last week and there is still no response. I find that the service dissapointing and I insist that my services be credited.