Unwillingly shared account

Two years ago, I switched to Telkom to supply my internet and email services. My wife was already using Telkom for her internet/email. When I signed up, for some reason, Telkom 'linked' our two accounts. This means that I am unable to use the Telkom internet to recharge or find out balances as it will only recognise my wife as a user. I have been to the Telkom offices in Centurion repeatedly to try and get our accounts 'unlinked'. The people there are friendly and try to help but at the end of the day, they do not have the competence to solve my problem. I have tried phoning the Telkom 'help' number but that is also useless. The rage and frustration I feel is immense.