Mtn please refund me

I bought data bundles for R170 which is 15GB for 30 days, I only received 500 MB when I call 135 for help I've been holding since 15:00 now it's 16:43 I sent a massage to them on Twitter and I provided all the proof, the consultant told me I bought 500MB, that time I provided the proof and there's only 1 option that on the capitec app for R170 15Gb 😢 all I want is my that Data that I bought with my money to be refunded on this number +***1