FNB online Business banking clueless

Have been trying to get a secondary user onto our business banking account for over 5 months. We get pushed from pillar to post and their customer service is virtually non existent and their call centre and technical staff are clueless. We are told you have put in the wrong code, your ID is incorrect. We even went in branch and got fica'd at FNB's request and this still did not work. when you send a mail you get ignored and when you c all the call centre they have. o clue and give you a random reason why its not working. No follow up, no customer service!