9 weeks and still no changes

Went to Nedbank,Zeerust on the 19 november 2018,to change my surname on account to ****en surname got divorced,took with my new ID and proof of residence,and the teller,first wanted to know if I had proof of identity (this was after I gave him above documents), the more I tried to tell him he then had my new ID in his hand,the less he wanted to help me,I told him home affairs won't issue me with ID if I were someone else,I could see that he didn't want to help me.I told him I want to see the manager,he then took my documents,made copies and told me,someone in the back office will change my surname on account,well almost 9 weeks later and still no changes. I don't have hours to go and wait again for staff that waste my time....