Went to do a sim swap and lost all my airtime

I went into the Rosebank Mall to do a sim swap since a friend had bought me a new phone which needed a micro sim. Thobile assisted me well and everything went fine. When I got home i put in the new sim into my phone only to find that I now have no air-time from a balance of over R120 rand. I feel this is extremely unfair and disappointing and if this is the standard thing that happens Vodacom should at least warn customers about it.<br> I have paid for this airtime and the money is going into Vodacom's pockets without me getting the service for which I paid. This is so unfair. I feel cheated.<br>