No response on account update for Business account

What poor service. I have a business with a business account that needs to be updated. So I have emailed them, then called their contact centre. I was then told to email ********** which I have done numerous times, latets ref number REF: ********** 4_ ********** 34. Just get an auto mail we will help you in 48 hrs - not been contacted or emailed. Then called the call center again. They elevated it to their Team Leader 0 guess what - still no response or action from FNB. So happy my private account is with Investec.