Change of cellphone number

It's been 3 weeks now that I've been back and forth with the UIF call centre. I have changed my cellphone number because I unfortunately cannot do a Sim swap. I called to ask for my number to be changed on the system because I cannot submit my unemployment claim unless my number is changed. I was then asked to send my *** copy in pdf format. I've done than. It's been 3 weeks now, today I called again and had a consultant hang up on me. The level of service I've received from the UIF call centre is terrible. I am very much upset and disappointed because I cannot submit my unemployment claim if this issue has not yet been resolved.