Frustrated wiht Poor service

Trying to register UCount card, Bank still had OLD cellphone number from about 4 years ago on the My Updates database, all other information is updated, been back wards and forwards to change the number and everytime when you phone AFTER you have been to the bank to change the number you are told the number does not reflect, it takes 7 WORKING DAYS for the system to update, and then you are told please phone back again and again and again