Unable to Assist Me in Amending My Banking Details.

I have been trying too change my Account Number for over a week. Every time I call Customer Care I hang on the line for different people only to put me on hold. This is an exhausting and frustrating experience. The consultants are also very rude. The debit order will now bounce due too RCS staff not being able to amend Banking Details. They making me feel like I am going for an Operation and they need blood to save me. Change the Process to make us the consumers lives easier. Employ people that want to help and yearn for the passion too assist. I've been on hold for 45minutes.