Mtn app useless

The MTN APP is a waste. I have this PAYG number since 2002 i think. The mtn app has a recharge reward. But i have never been able to select it day or night. Tuesday or wednesday i purchased R300 airtime from Garage. Thats it, i have to buy data or voice bundles just to get a damn reward.purchased 2x R50 2gig bundles they done, voice bundle also done(all above are 7day bundles but i use up in 2days. On the App theres a home wifi data selection *doesnt work" "recharge rewards has NEVER Worked" Even Extratime gives me R10 recharge option,before i could get 2-300 on ET. so the R300 AT i bought gets no reward? Yet theres a selection for it...