Terrible prepaid meter service

I had a pre-paid meter installed on Thursday 3rd August, when I tried to buy electricity on Friday I learnt the meter wasn't registered. It was eventually registered on Saturday after calling the technician Ernest numerous times. Now I cant load the electricity keeps telling me the 'connect failed'. Does this system actually work???? It is ridiculous we are without electricity since Saturday morning and my mother of 85 years lives with me. The technician wants me to send him money so he can come and have a look at the meter to see whats going on with it, why should I pay him for a service he should have done properly the first time!