MTN eats airtime without having the SIM card in my phone

On Wednesday 6 September 2016. I have just put my MTN SIM card into my phone as I only use this SIM card to check my emails. But before that could happen I recharged with R60 airtime on Saturday 2nd September and removed my SIM card from my phone. Today on the 6th I then put it again into my phone to job hunt and I purchase a R10 Rush hour data bundle. NOTE : my data connection was OFF the entire time up until I purchased the R10 Rush hour data bundle which I did get a confirmation SMS saying it was successful !! After browsing the internet for a few minutes I then get a notification saying my data bundle has depleted and I check my balance and I am now sitting on R21 airtime and 98MB of data. Where did my airtime go ? Instead when I call the Customer Care Helpline I'm being told that I was on the internet at 11am which I just had woken up. I would really love to have my airtime back ! MTN has caused me a lot of airtime I could have used to apply for myself a job and now I can't because I no longer have enough airtime .. Pay me back my airtime !!!