You buy a product from them and automatically without your consent, they sign you up monthly and start charging you a monthly fee. Then you cancel and after 2 years, you get an email saying you didn't pay the subscription and they ask you to pay €9.95 through a link. If you don't pay, they put your name on Collect Masters NL and ask you for a value of € 56.68 and threaten to take you to court.
My recommendation is DO NOT BUY ANYTHING FROM THIS BRAND. Their product is usually cheaper, because they make money by doing corruption schemes, enrolling all brand buyers in their plan and after 1 or 2 years they ask you for money from an unpaid subscription!