Capitec Airtime purchase

I bought airtime on the 27th November through the Capitec app. I never received any airtime. I spoke with a consultant who advised me there was a error and the funds will be returned in 24hours. Guess what no returned funds. I spoke with mtn today and confirmed there was a problem with airtime vouchers purchase from Capitec on Friday, just to be told by a consultant of capitec I need to sort it out with MTN because the funds went off my account. Since when is it my responsibility to do your work for you