Useless Voyager miles

Voyager has changed their miles system. When you now go onto their website , you are faced with gobbeldy**** about Dynamic and Journeyblitz and Star awards......but nowhere do they actually tell you how many miles you need for a ticket. So you phone the helpline, hoping to book a ticket for an overseas holiday with your preciously saved 100 000 miles ( which used to be sufficient ). Only to be told that the number of miles now varies according to demand but that the minimum required for a ticket from Joburg to London is 140 000... ONE WAY. Guess who will never be flying SAA again if I can at all help it....and who will be cancelling my Voyager credit card for one with rewards that I can actually use.