Really???

Got phoned on two occasions for an offer - Vodacom sim 10GB (R149) or 20GB R199) , then got phoned back as I apparently do not qualify. The offer was initially to "sav me money". The answer to why I do not qualify - I already spend to much money with Vodacom and they will sell me a 3GB for R169 and maybe after 3 months of being on this contract they will offer me the 20GB. Really, no cost saving only a *******.