Vodacom just can't do it!

I've been trying for more than a year to get an invoice for someone with the same name to be stopped from being sent to me and after my last complaint about this on Hello Peter, Vodacom phoned me, emailed me and sms'd me, apologizing profusely and promising to sort this out - all words again from Vodacom, as they have not been able to do such a simple administration job! Come on, Vodacom - get your act together - it can't be THAT difficult. Just by the way, I've had my account with Vodacom for more than 20 years! Loyalty means nothing anymore....sadly Vodacom falls into the 'lack-of-service' category of so many businesses nowadays. Big promises, but no action