Ripping of NSFAS Students

I joined MTN because as a UNISA student and NSFAS beneficiary we were give Data to do out Online Exams which MTN didn't give me my Full Data offered by the University. Now MTN provided Students with Student packages which i signed up for one, R109 Monthly Contract starting in August, but on received 3GB from on the 11th August and talking pints which i haven't used.

Today i receive an SMS that says I've used my R300 Call Limit so they suspend my Account when i call MTN for a Balance it's R400. I am really unhappy and need to know what the hell is going on!!!