Poor Service from Tyme bank is regards to changing contact number

Terrible and poor Service from tyme bank, I cant change my number as my old contact number was deleted, I when to the Koisk to try and change the contact number on my account but I am unable to as I dont have then new smart ID card and tyme bank needs Biometics to change the contact number i was instructed to contact the call center and they would help, which was also a dead end, this is a poor excuse as all the other banks allow you to change your contact number without biometics need, and nobody is able to help it looks like ill need to change banks after this issue........ VERY POOR SERVICE