Spot App Failure Chapter 2

I tried to buy data on MTN via the Spot App. The transaction failed and I did not receive the data. Two amounts of R110 was ********ly deducted from my credit card. I lodged a complaint via email on 28 December with proof of my complaint. Although I received a response on the same day that the matter will be investigated, I have received no further feedback and my follow up emails have been ignored. This is appaling service. This is the second time that the Spot app has taken my money without any proper basis.