I'm on MTN 1c per second (no longer available for signup) so I need to talk for longer to reach the target spend to get the WOW Bonus. For me I opted for the minimum WOW Bonus as I can reach the R6 target almost every weekday. The bonus airtime however depletes at R2/min so R60 is in effect it 30min of MTN-MTN calls. SMS's (@50c) or data (@R2/MB) only deplete the bonus airtime once bundled SMS's or Data are finished.
There is now a R10 option which gives R128 Bonus airtime (64 MTN-MTN talk minutes) if you want some free calling to MTN on a particular day, though in that case perhaps buy a R5 rushhour (60min calling) pack, and stay on the smaller WOW package to get the daily bonus.
Indeed. If you manage prepaid promotions well you end off paying next to nothing for calls. I make it my business to know because talking on the phone should not hurt your pocket. If you are paying more for calls than a street wise 2 then you are doing things wrong.
I think MTN offers the best value for money. You do not excluded from any promotions no matter your price plan. They have so much more promotions than other networks.
... hardluck