30 Mins to answer then hangs up

I had made a booking for a cruise and then wished to change the date.<br> I called the call center on the number advertised on the website ***). we have to listen to the whole menu selection options and eventually at the 3rd menu no inputs are registered and the call terminated.<br> <br> I then call an alternate number and hold the line for more that 30 mins and midway through the conversation the call is cut.<br> As a result I have decided to cancel the cruise instead of making a change.<br> <br> I would hate to think what would happen on the cruise they can't mange a simple call center.