VODACOM CUSTOMER SERVICE

I am now trying for weeks to change my email address at Vodacom. First they blocked me on my Vodacom email address because I refused to pay about R200 a month for an email address. So I got a Gmail address. I have change my address with them as I still have my cell phone. Then some woman phoned me and told my my package that I use on my phone is expiring and I must take out a new contract and she told me that my email address is back to the old Vodacom email address. I tried to change it with her over the phone. She did not listen and put up the wrong email address after I spelled it and more than once told her that there is no 's' in the word. She put an 's'. I have send now may emails to Vodacom and try everything but with no results. I just wants to change my email address to *** to receive my account again every month.