Waiting 45 to an hour on each call

For the last two weeks I have been struggling to reach the correct department at Telkom to relocate my services. Each call I have made I waited 40min - hour, then I need to end the call as no one is answering. I have been put through to 3-4 different departments each time, with no avail. Don't tell me of high call volumes, me as a client can not wait this long to be assisted. I make the necessary payments each month and expect good services. The closest I have come to assistance is when the lady said their system is offline and will contact us back, which never happened. So tell me, why do I need to use your services??