If I mention a double payment on 23rd of December, why do I not have a response 5th of January?

I installed Algoriddim and decided to buy the FX pack along with it. After payment I was not reverted and I have received no mail with a confirmation or anything. Then I decided to buy via Paypal and that was successful. I expect a refund for my iDeal payment however. But a response seems to much to ask for. I am waiting for 2 weeks now. I am not amused.