Airtime depleting at a rapid rate!!

I am so upset with MTN!!<br> <br> I will not pay my contract or upgrade ever again! You guys can take my cell phone I don't care because at this moment I can't even use it.<br> <br> I receive R200 airtime every month and that airtime is usually more than enough.<br> <br> But this month (since the 12th) my airtime usage went sky high!! I have gone through +- R600 of airtime.<br> <br> Every time I load airtime, it gets depleted at a record time! I have been with MTN for a few years and NEVER had this problem.<br> <br> I have placed my sim card into another device to see if I have the same problem and the same thing happened!<br> <br> I have restricted my background data, deleted a few Apps and I log out of FB each time (the same I do every month) but I STILL have the problem.<br> <br> It has been 2 weeks now, I've went to the George branch 4 times but they couldn't help me and said I should phone 808. I have now phoned 808 5 times and they have logged queries and resolved it but I STILL have the problem. Then I had to phone 1555 just to be told that I should phone 808 AGAIN!<br> <br> Now the last person said that my query would take 7days+ working days to be resolved!!! <br>