Bad service

The service provider is reaping the network users off.. Yesterday I did an airtime advance of 10rnds from them only made a call that charged me 24c according to their call center agent and connected to the Internet for 19c I believe that was what'sapp den when I wanted to make a call the main reason I made the advance I had 0 balance when I call them they say they are not able to help me as the billing has not updated thus was around 12mid day and they will contact me once the billing is updated after 2hours 30 minutes I call them they still were not able to assist saying the billing is still not showing like really I made the advance for something I needed to do then now I am expected to pay for that advance and the charge for what I did not use. Even the supervisor at the call center could not assist this is really terrible service from them.