International roaming and dialling not working!!!!

I am so annoyed. I upgraded my contract on 28 Aug. I told several agents that assisted me that I will be travelling overseas on 31 Aug and that it is crucial that my international roaming and international dialling remain working. I was worried that my services would revert back and that I would not be able to phone from Spain. They all assured me that this should not be a problem. They also assured me that my voicemail would remain inactive. The very next day my voicemail was reactivated. I phoned in to get it changed and to express my frustration. They corrected it and again confirmed that my international dialling and roaming would remain unaffected. Guess what? I am in Spain and I am not able to pick up any networ**** (My husband can and he is also with Vodacom). The online chat is "unavailable" and there doesn't appear to exist an email address for this company. And even if there was one, when would they respond? I need my phone working NOW. Can someone please URGENTLY reactivate my international roaming and dialling. Also, make sure my voicemail is still INACTIVE. This is super urgent. Please email me to confirm. I am already regretting my upgrade...