*****ing Airtime from unsubscribed Customers

Since October 2015 after being a customer for over 10 years with no problems. It is absurd that everytime i load airtime to my phone amounts of R5 and R3 keeps disappearing. I have contacted customer care more than 5 times for the same reason but however they are telling me that there is nothing they can do except giving me codes to unsubscribe.<br> <br> i was even given a way to check if i have content services that im subscribed to by dailing *141*5# option 2, only to find out im not subscribed to no contents. I have sent all the code to stop but nothing happens instead my airtime still goes missing.When i have a balance of more than R5 then R5 goes missing and if its less than R5 then R3 goes missing.<br> What frustrates me the most is that such never happen in the past years i've been with MTN and the fact that client service Agents tell us straight that there is nothing they can do. How can 1 be able to take off an amount out off a trusted account and yet cannot be traced who is taking it. I was even told once that they cant see who is deducting the amounts but they can actually see the amount taken from balance.Whom do we as customers get assistant from if MTN cant do nothing about it?