bad service issues still no resolved

i have been trying to convert my airtime to data for the past 3 months ,vodacom say the only way this can happen if i convert it myself on the my vodacom site<br> i have tried for three months and called over 7 time with no joy <br> the site says im not the main member but i am and no matter what i try it does not work <br> called the call center many time they informed me they would cancel my my vodacom account and i must re register this too has not happened