Songkick is an aggregator of ticket links and tour dates from hundreds of sources. This means that Songkick does not directly sell tickets for the events it lists, but rather links out to ticket vendor's websites.
If you're looking for help with a ticket you've purchased, you'll need to reach out to the ticket vendor.
The best thing to do is check on your bank statement or email confirmation for help in finding who you booked with. If you're still having trouble tracking this down, head to the Songkick event listing to find the list of vendors.
You can find links to the most popular ticket vendor help pages here: