Standard Bank incompetence

My mom has been a client of Standard Bank for 45 odd year's... She has personal business and trust account with them. My parents recently moved into my property so she had to change addresses etc... Went to the bank in March 2020 and some chap supposedly did the changes, however he only changed the personal not the rest of the accounts... So we have not been able to access any other accounts since then try contacting them either they don't answer or you get another *********** on the line that's not capable of doing their job I've now even spoken to them on messenger but still have no joy.. I have cleared the history on the computer used Google Chrome and Microsoft edge to no avail now all the accounts are locked..... THIS JUST ONCE AGAIN PROVES THE *********** STAFF THAT ARE EMPLOYED BY MOST INSTITUTIONS IN THIS COUNTRY CURRENTLY... IS THERE ANYONE WHO IS ACTUALLY CAPABLE ANYMORE I WANT THIS RESOLVED BEFORE I REPORT THIS TO THE BANKING OMBUDSMAN.... By the way my mother has has had back and cataract surgery in the last month and is now in a wheelchair so getting to the bank is no longer an easy task... I even asked them to send a representative here to assist but clearly that's just too much trouble Pathetic and Incapable staff...