MTN pillaged my data and airtime

I've had a serious lack of customer service from MTN across various platforms recently! iPhone contract provides 300MB, R100 airtime-14th monthly. 16 Sep ALL of my airtime AND data had disappeared. I bought more-R60 airtime and 300MB. R145 in total.Within 5 MIN it had depleted! I hadn't even touched my phone. Background app refresh is off, no updates run off cellular data and I'm not subscribed to any services. Phoned 808. Nomatelo logged a case and said (erroneously) I would hear in 24hrs. I was now without airtime and data, not prepared to waste my money without resolution. Phoned AGAIN. Lindiwe checked progress-Nomatelo logged BIS query-for my iPhone. 19 Sep. NO response! Went into MTN Pavilion. Siva said nothing could be done till Monday. MTN advertises 24HR customer service, clearly false advertising!! 23 Sep-Phoned the call centre. No response from my email sent on 21st or on the case MTN started investigating on 17 Sep. MTN is unhelpful and ***********. Phoned AGAIN, spoke to Aurelian. Told me that it was my fault and call centre people I dealt with last week should've told me this. He couldn't tell me how my data was depleted! It was my problem! Thanks for nothing MTN