Absolutely bad service

I made the worst decision last month on the 5th July 2017. When taking out a bond with FNB they punt Outsurance as a insurance to take up Building Insurance. Today I got notification that the Bond has now been registered and I can take occupation. I tried calling the contact centre to get the Building insurance to start from today the 30th August 2017, but apparently there are only 3 people in the Home Loans section, which I find extremely disgusting, because I have to hold for a long period of time to make a simple change but when you submit for them to call you it happens in less then 2 seconds after hitting the submit buttton or even trying to call there new sales line, you immediately get to speak to someone. I was going to do content insurance but they wont get cent more of my money. Outsurance can sign you up QUICK but they CANT MAINTAIN SERVICE LEVELS!