Hello,
We aren't a manufacturer so we don't really have a say in what kind of yarn goes inside of the kit? You can contact the manufacturer, which is Vervaco to see if they have any other kind of yarn they can send you?!
http://verachtert.be/index.php/vervaco-en/collectie/knooppaketten/
If you purchased the kit from our website, click on the Customer Care tab at the top of page and then to "Our Return Policy" to find out what you need to do in order to return it.
Thanks!
Kristi @ ELH