Bogus airtime charges

I had recharged my airtime on the 26 Aug for R30 and partially used my airtime and I was awarded 100MB. On the 27 Aug i had airtime of about R15 and 13MB of airtime and bundles left in my account. I used the my bundles to access the internet and consistently checked my balances as I was using it to check if the bundles were depleted. At the 1MB threshold i switch of my MTN sim card for internet use and switch to another network. During the switch I still had about R15/R13 airtime left and I didn't make any calls. When I woke in the morning of the 28 Aug all my airtime was gone. When I called the only excuse they gave me, which by the way is same excuse they give to all MTN users is that is was used up in the internet. This is despite the fact that I had switch off the internet use on the MTN sim card. Hell they even told me they couldn't see the recharge amount I had recharged by on the 26th.<br> <br> Is MTN now starting a Podzi scheme??? Are some of us being punished for the free airtime that they dished out and now we are paying the price to cover their losses on that airtime? Many of us are complaining about this and it is really unfair.