Roaming still not active | No replies to my emails | No way of calling Vodacom

On the 31st of December I phoned Vodacom to request activation of international roaming on my Vodacom SA sim card. I informed the consultant that I was relocating to the UK and that it was very important that roaming was functioning correctly. The consultant walked me through a few steps and at the end of the call, assured me that roaming was indeed active and that I would be able to make and receive calls, SMS's and use data from abroad. I have been in the UK for nearly 1 month now and have NOT been able to send any SMS's, make/receive any calls, or use any data - despite having loaded R500 airtime and attempting to activate a roaming bundle. I have sent 2 emails through to Vodacom over the last 2 weeks and received NO RESPONSE. I have tried my best to call Vodacom - but my Local UK Sim card does not allow calls to South Africa, and my South African Vodacom Sim Card (the one that should have been working) does not allow me to call anyone (not even the Vodacom helpline). I tried to buy a Skype International Calling package, but even this does not allow me to get through to Vodacom. I AM EXTREMELY UNHAPPY. If anyone from Vodacom reads this, please just activate roaming on my account. The only reason I migrated by Sim Card to Vodacom was because I was promised that Vodacom offered world-class international roaming capabilities. This is ridiculous