Is the puncture just through the gel coating? Or completely through the hull to the inside?
Either way, both situations are repairable. There are some great DIY tutorials online if you're handy, you can take it to Swift to have it completely re-done for some serious $$$, or take it to Jonny's boat shop. Not sure if they still offer the service, but the Complete Paddler in Etobicoke used to do gel coating as well.