Electricity units

This company is a **** , my bill was R1100 , I have purchased electricity since from December 31 for an amount of R200 , then a couple days later I bought for R450 , then today I bought electricity again for R210 , R200 , R90 and an additional R150 in total I jave paid them R1300 for a bill of R1100 . I did not get any units instead I got only 6 units when I purchased with the R150 , I spoke with them earlier I was told I owe R 70 so what happened to the R80 ?? Does R80 only give 6 units in witpoortie these days ... I want the management of this company to explain what is going on because this is bull****, I want my units cause this is broad day light ******* , this company is **** . I am so ****ed