Most useless call centre ever

My wife and my self have been trying to no avail today to get through to the call centre. You choose all the options according to the voice prompts and then after about a 5 to 10 min on hold, the call is ended. I can't believe that the call centre is so busy, or maybe they don't have enough staff. Or the service provided is so poor that so many people keep phoning the call centre. I think it's time to jump ship to another service.