Voucher not going into the prepaid meter

The young man who phoned me back this morning to help was amazing. His English and ability to communicate was excellent. He duplicated the problem my tenant was having with a meter in Cintsa East, while I am in Johannesburg. He phoned the tenant and walked him through the process and got the voucher entered into the meter. He then phoned me back and explained that the problem was that the Eskom lines were overburdened at dinnertime . In future, wait until a quieter electrical usage time and then try again. My tenant later phoned back to also report how helpful your employee had been. I might add that when the problem arose last night, I was not satisfied. I had to phone 4 times before getting a person on the line. I sent email and a form which came up when I tried to do a chat with a technician. The person who phoned back did not speak distinctly and I really could not understand what he was saying.