Bad service, no communication

I opened a business account, but has not started trading yet. Now that I want to use the account FNB say that they have closed it because it was not used. Well, why didn't FNB inform me that this would happen and why didn't anyone call me to say that the account was about to be closed? Now they want me to go into a branch with all my paperwork which I don't have time for. Why can't the bank just activate my account again?<br> <br>