Wasted my money buying useless whatsapp data

you credited my acc because you were taking my airtime yet i have data my complain is why i buy whatsapp data but it doesn't not instead my whatsapp uses my other data it even expired last nyt 56.97mb , so clearly this whatsapp data thing you just playing with us wasting our money Because it is not working the consultant i spoke too on Friday night confirmed that they have problem with the whatsapp data then pleasw don't tell me to buy data i always do Vodacom you always have something to defend your self with,