10+ requests to action a simple instruction

This is just shocking. I don't normally complain, but after 10 attempts, I am at my wits end. I live abroad. Received correspondence that I need to update my residential details with FNB (legal requirement) or I can opt to close the account. No problem, I don't use it anymore, so I opted to close it, and filled out the form attached, and sent it off. Here is when the issue started. First they don't respond, and I have to constantly follow up. Then they want my proof of bank details where the balance after closure needs to be paid into. Not a problem, I sent that off and add my telephone details asking them to phone me if needed between 9 and 10am SA time since I don't live in SA. FNB: You have to go into the branch to close the account Me: I can't go into the branch, I don't live in SA. (second time mentioning it) FNB replies: Please provide a suitable time to phone you. Me: As mentioned previously, you can phone me between 9 and 10am SA time FNB replies: Please provide a suitable time to phone you. Me: As mentioned TWICE, you can phone me between 9 and 10 am. FNB: Ignores me ever since. Sick and tired of poor service delivery. Super glad to be rid of the country. Looking forward to get rid of FNB too.