Unable to pay my telephone account online

Have tried numerous times for the last three days to pay my telephone account. Have checked all info is correct and the internet is working. Still unable to pay my bill. Frustrated and cannot get through to Telkom's call centre for assistance...waited in excess of over an hour each time I have tried to get help. This is unacceptable. Has nobody at Telkom checked their online payment service???? I need to urgently pay my account now, and I am still unable to do so. Very annoyed!