Failure to open Business Account

I have been trying to open a business account since 14/04/2015 with no success. It has been 7 weeks now. I have tried to escalate this through FNB complaints line with no success again. I have emailed them through all the documents that they require but I have not received any correspondence from them. I currently cannot run my business due to this. When I visit the branch I am told that they cannot help me since this account was opened online initially so they don't have access to my file. FNB is being unprofessional, it would make much more sense to me if they directly communicate the fact that they are not interested on my business and then I shall go to another banking institution. The question that I am pondering is that what kind of service should I expect, as their customer, from them upon eventually opening the business account. I am tying this complaint because I have now exhausted all other avenues known to me.