Bad service from MTN service champions!

So I'm new to the network and have been on the line with 4 of your service champions, forgot the first 3 but thato Hanong was the last consultant I spoke too. My issues is my airtime is being consumed by your out of data policy. And if I can remember Icasa clearly stated that for such to happen the client my give consent for such to happen. 2 of the service providers that I use play by the rules. Can I please get my airtime back and y'all need to deal with this as the number which they gave me to opt out isn't helpful. Nkululeko Zama the line manager is not available and if I was given a reason like his in a meeting I would understand. Need to sort this issue out and need my airtime back.