Unity *********** Staff

I have contacted your customer service in order to update my banking details for debit order,4 times i have called and the first agent asked which bank i want to change to ...thereafter says thank you it has been updated without taking my new acc number,second and third time i was put on hold and calls were also dropped on me including a team leader/management,after being on hold for 45mins Im really dissatisfied,and will never recommend Unity Mechanical Warranty,and please be advised should the debit order be unsuccessful its your staff that is ***********,and should there be a claim this review has dates ,please contact me asap to resolve,before i further to obudsman.