Not happy at all with fnb

Ive had some bad experience with fnb today. I've been with them for 9 years and today was the cherry on the cake. I purchased airtime a week ago and it was unsuccessful, as they had problem purchasing airtime the Saturday. I bought from my capitec account and it went through after that the payment went of twice of my fnb account of R559 and another R559 as it was twice. I even looked on the telkom Sim card the airtime wasn't there so I though they will be able to help me give my money back, as I phoned the Monday to log a query. And so 1 week later today they sms me and said the airtime was successful and airtime has been topped up. I was so furious I phoned fnb and told the lady I don't want the airtime as I already bought data for out wifi from my capitec and now I couldnt bought all my groceries cause I'm waiting for the money from fnb.

I spoke to fnb today and they said they can't reverse airtime, and I want my money back I don't want the airtime. So I'm complaining on hello Peter now.