Banking app taking money but not receiving data

Im very disappointed in Capitec I purchased data so many times through the app and there are numerous occasions where my money gets taken but I don't receive my data

I've never mentioned it before due to me thinking its a flaw on my side. I realized it cannot be as it's more than once.

Something needs to be done as I feel laying a formal complaint with capitec won't resolve my issue. Losing alot of money on data I do not even get to use