FNB Agents Giving Misinformation

I am honestly beyond frustrated with FNB and the customer service right now. On Monday I called AND secure chatted to agents, enquiring as to why I cannot access the full amount on my revolving credit plan. I was told by BOTH that I only needed to pay back 15% of the amount owing to access the money. Now today when I query why the money isn't reflecting I am told I need to pay 15% on the whole amount? I was relying on this money and trusted the information given to me by the agents to be **** to and now have no access to my funds. This is absolute ******* and I'm ****ed off.

Also, how do you grant someone a loan amount and then say you can't access the full amount?