mtn wont resolve issue

i am a mtn customer and i have lost airtime on the 8th of November 2015 its the 13th of January 2016 and there has been no resolve and nobody even send me a msg to say anything i have phoned 808 customer care about 20-30 times and all ive been told was sorry you need to call back tomorrow and the time allocated to resolve issues like this is 9-10 working days. clearly that period has come and gone but no help and not even a peep from them. MTN is the WORST network EVER. Last time they just took 2gb of my network away and told me it was my fault yet now a days with these modern phones you can see exactly where your data went to and how much was used when i told them that the very next day they gave me my data back no questions asked so if i didnt mention anything about my data usage thing on my phone i would have just lost my data.