Electricity purchase

Last night at 20:00 I purchased electricity (internet banking)as this was my first time doing so I tested with a R50,the purchase was successful I even paid bank charges of R1.30 however Today I have still not received my voucher (17:46) I am calling the number they provided for any queries ***,the only word so far is we are currently experiencing high call valomes, my holding time has so far been 50min now this is extra cost, Remember you sell internet banking as easy and fast. Why O why This is tipical banking; ABSA does the same thing ; what happened to client service. As a client we hold on at own cost, because we've been ****** of samwthing.