Absolute shocking service every month!

Cell C is the most *********** bunch of people - the call centre has no idea what in store agents do and vice versa. We made a payment to our account on the 15th and Jan and today (29th of Jan) after almost 20 years of being a clients we have been told that we need to allocate our payment??? What do they have an account department for and why do we quote account numbers if we need to allocate our own payments? This is shocking how the service has gone to s***! Perhaps Blue Label Telecoms and the other shareholders should rethink the viability of this service provider and their inability to provide a problem free service?