treating customer unfairly

I have a problem whereby every time when I buy airtime via internet on my contract number I do not get free airtime of the same purchase amount - but on another number which is a prepaid I get free airtime whether I recharge via internet or buy prepaid @ the store , why?

Another thing is that I have bought a watsp ticket for R29 i.e 1GB - but it is not effective - everytime I buy data my watsap chows the data instead of the watsap ticket. since I bought the watsap ticket it has remained on 1Gb balance not moving.