Worst customer service ever

We took out a policy with clicks financial services. Which is underwritten by regent. Then hollard took over. We are trying to get to the right department in order to change our bank details. Mission impossible. They gave us 6 different numbers. They either put you through to a dead line or the phone just keep ringing. No answer. Two weeks and 350 rand airtime later we have no joy. Now our policy will lapse and we've been paying it for 10 years already. It's the worst customer service I've ever experienced.