Impossible to downgrade. ********** client-service experience.

I have been trying for months now to downgrade my cheque account. We have immigrated and on countless occasions I have given your staff my new contact details and a good time frame in which to call. Yet they still only call me in the middle of the night and when that is unsuccessful they just don’t attempt again for weeks until I complain, just to get another call in the middle of the night a couple of weeks later. Your service is dismal. Truly disappointed.