Technical staff at Vodacom . Are there any ?

6 months after starting a new Vodacom contract and cannot receive calls from my sister in the UK ? Is this really possible in 2016 with all the latest technology....too right it is . I have had 2 calls today 8th January from the service department telling me they cannot fix my problem with overseas calls because I am on a different contract to my wife who does receive calls from service provider O2 in the UK . When I question the stupidity of this I was told by Mr Stander that he refuses to tell me again what the problem is . I have gone out of my way to assist by suggesting I upgrade my handset and get a new Vodacom number only to be told it might NOT work . What do the people actually do at Vodacom ? I am so frustrated with this service after 6 months that I feel I would get better luck throwing the phone in a creche full of 4 year olds and asking them to fix it .<br> This is blatant bad service by unqualified staff who think they can treat the customer like dirt .