Capitec bank must change my surname

I was suppose to recieve my uif money from the department of labour but was rejected by the bank because I got married but had not had a chance to change my surname so I went to capitec bank to change my surname with my marriage certificate I was told I need the new id I told them home affairs doesn't issue new id because of lockdown regulations I went to get an affirdavit as proof that indeed I can't produce a new id. They still refused to change my surname on the system instead gave me a letter with the new surname but that is not helping because my money gets rejected. I am unemployed I need this money.