Why have you taken money for it already then, when there is not product yet?
What country are you from, Dansker? I don't know about other countries, but at least in the USA it is common practice to sell what is called "subscriptions". It is basically pre-ordering and reserving a fixed amount of issues to be delivered at a later date.
As my name implies, I am from Denmark.
In Denmark, you only sell the February issue of a magazine, if such an issue exists, or is going into existance in the upcoming Februrary.
Since my purchase of the February issue, I have come to learn that it will be a March issue. Fine, I will give you the extra time, and accept a months delay.
Since it is now March the 17th, it seems the Februrary turned March issue is turning into an April issue.
I ordered this magazine in the belief that it would be delivered to me within 1 month, or max 2 in the event of unforeseen issues arising.
I see you have already charged me for my purchase, but still no delivery is being made, nor is a date of such available.
You see, I work in debt collection, maybe this makes me a bit less patient and less trustful than others, but normally I would advice my client to either write off the money spent, or initiate litigation at this point, when nothing but promises has been delivered for 1-2 months.
If you no longer want to wait then simply ask for a refund.