Gold Business Account bank fees price increase almost 100%

I opened a business account a year ago at FNB for family trust. The bank fees then was R75 per month. In June this year(2018) they send out an email indicating a price increase of almost 100% to R140. I did go esquire this price increase twice with the bank. First time before the actual increase started and again start of August. The first time they said that I don't need to be concern because the increase was targeted for non family trust accounts. The second time I phoned in and the response then was that it is the new tariff and I must make my peace with it. The increase is ridicules, there are other banks that still have business accounts with banking fees @R75 per month. I'm going to need to change banks if FNB doesn't reduce their fee to market related value. This will also infer additional admin cost which I find unfair.