Worst experience

<p> I bought a new phone at vodacom back in February and i couldn't have made a worse mistake. Since the day I got my phone I've been sharing my number with someone else from who knows where. My call log is full of incoming and outgoing calls to numbers and people I don't even know. When people call me, sometimes they get through to me and sometimes they get through to some Nigerian man. This is so frustrating I've missed so many important calls and business opportunities and whenever I have a missed call I can never be sure if it's for me or the other mysterious Nigerian man using the same number. I've tried getting vodacom to sort this out but either they tell me it's impossible for one number to be given to two people or they say they'll log a call and a technician will get back to me which they never do. I don't know what to do anymore, if my phone wasn't under contract I would changed networks by now.</p>