customer care - what customer care

as i write i am on the phone trying for the second time, airtime is almost finished, i got cut off the first time and now i call back to wait for an agent and no one answers. they have no idea of the emergency of the delay they cause with regards to billing. the reputation of this call center is atrocious, at 9am i the morning how busy can you be other than fixing all the terrible messes they have made. i just received a heart attack bill and need to rectify it but they do not care. they bill wrong and insert a ridiculous reason. this is unacceptable. what people are they employing, if they do not know how to do billing the right way. answer the dam phones or call us back.