I cannot get through cutomer centre

I have been trying to get through to the call centre and speak to a consultant for the past 2 hours. Everytime i press 9 and the guy says, i will transfer you to the next available consultant, next thing he says is \ sorry the system cannot provide you with this service currently"...i dont know what that means....i need to speak to a consultant to cancel my BB plan and subscribe to another plan for the month. """