Terrible service

I received 10 gigs of daytime data and 10 gigs of nightime data from unisa and have been unble to use it. After numerous calls to telkom mobile no one has been able to help me and saturday the 8th I was on a call with maria who was lggin a call with a technician because nothing else was working...she then after my compliants cut the call on me without loggin the call. This is extremely unprofessional behaviour and very disappointing service received. my exam is friday and all I get from telkom is excuses.