Extra expenses on flights

When you check the info for extra bags on the website it shows from R250 p bag and on your booking e-mail is says R320. But when you do the actual booking for a extra bag you get charged R330 per bag. What a way for the airline to make some ekstra bucks. 2 extra bags on return flights is an extra R320 you have to pay. If a company cannot update the important info on their web the customer shouldn't pay for that. I'm only 1 customer, but this is 1 less customer for you.