MTN is Nonsense

I want to cancel my contract with MTN i am TIRED of struggling with MTN its nonsense i have complained before and i am tired of complaining(i got my normal 300mb for the month and got extra 165mb free which i used, in total i had more than 465 on the 14th of March and yesterday (17th march) i think i was left with 311mb and today i got the sms stating that the 100mb has expired and i am left with now 208mb how is this possible?. Someone must explain why im left with 208mb as im under the impression that i have been only using the free data that i was given. this has been going for a long time. i just called and spoke to Smangele and she told me she cant assist becos her system was down i must call again...i must say i was not surprised <br> <br> I have another vodam contract and i have never experinced this nonsense with them, i have had it with MTN<br> This is a total nonsense if its Data disappearing and network<br> I need my data to be replaced asap.