Poor service delivery

I reported my recharge box as i use prepaid electricity in March 2017 to their offices and was told it will take 3 months as they order them. After the 3 months i went to check and i was told that i must wait for their call. It's January 2018 still waiting. When you call them to recharge for you it's a mission. You get 3 or more reference numbers before they come and it's always stories. I called them yesterday as I was at home the whole day and they didn't come. Sometimes the electricity gets finished while still waiting for them. Why are we getting this kind of service as paying customers?