It's a service they implemented and the fact the game is in alpha has no bearing on it, they should be looking for ways to improve the service and get feedback from those who are still playing the game since more than 50% of the playerbase now seems to have stopped playing. You're entitled to your option, but it is only that, an opinion. Waiting 7 days for a ticket to be answered is ridiculous as some people need the voucher to replace sold ships for customers or personal ships lost due to bugs. Often people do not have an abundance of additional resource to afford to not have their ship 'lost to a bug' replaced in a timely manner.
No one is saying that the people who answer the tickets are not undoubtedly busy, but that doesn't change the fact the service needs improving. A way to track open tickets to say the least would be good, a standard format for tickets rather than a typed out text box, better indication of what is needed when tickets are submitted.
The fact this game is still in development is not holding back improving this service, this is doable without developers, coders, designers investing time that should otherwise be invested on getting the schedule back on track. Just needs feedback and consideration and ultimately a decision