Inconvenience

I received an email as well as a SMS from Standard Bank saying that I need to go into a branch and Take my ID as well as my proof of residence with me. I gave my proof of residence to Standard Bank about two months ago. Why do they need it again? I avoid going into the bank at all cost. I also work late and now I have to find time to rush from work and go to the bank within ten days. The bank does not stay open very late either which means I have to be there by half past three/four. I am not happy with Standard Banks service and it is very inconvenient. Please can someone help me with this matter.