Airtime taken for DATA!!!

On 27/4 I spoke to Ayanda at MTN on 808. After explaining my query about 5 tiimes, I was cut off! Not sure if I was cut off because he couldn't assist me or what happened.<br> <br> Last week I changed my mtn sim card to the LTE sim. I had about R180 airtime and 217mb of data still available to me.<br> After changing my sim card, I received 1 gig of data as part of the promotion to be used within 48hrs. Obviously I didn't use this up so the balance was taken back by mtn.<br> Which means, I should still have 217mb of data etc. I did not use my phone to phone out for R180 during the past few days. This morning while at work, I was trying to download things and I noticed it wouldn't download. I then checked my balance and unbelievably I only had 0.51 airtime and 213.31mb of data. I am not quering the data, however my AIRTIME!!! So I phoned 808, as I realised something was definitely wrong.<br> Ayanda at the callcentre told me I have some nite express data and my mobile data was being deducted from my airtime!!!!! I have never used airtime for data!!! This occurred obviously after the whole 1 gig free episode! <br> I emailed Mtn at customer care on 27 April, reference no : ***