In the dark

I'm very unhappy with the service I'm getting from Unipin. On the 2nd April I bought a R100 voucher to load my electricity. It took very long for the voucher to be redeem. When the numbers came my meter kept rejecting them the whole morning. I went back to the shops to buy another voucher and I got new numbers which my meter accepted. I phone Unipin to complain and the first person that answered my call told me they are not the municipality I must go and lodge a complaint with them. I called again the next day and spoke to a certain lady who I explained my problem to. She resent the same voucher number to me and said I must speak to the municipality. I called the municipality 3 days in a row only to be told nothing is wrong with my meter Unipin must sort out my problem. How does it take 9 days for a client to get help? All that's happening Im being sent from pillar to post honestly.