Internetagentur-was.de wants money, what should I do?

Question

Network administration

Preamble: about 3 years ago, one of my old acquaintances from Germany advised an inexpensive hosting (subject). The cost was 22 euros. In addition, a free domain name was given in the .de zone. At that time, I thought about starting to write in php, and after playing around with hosting a bit, I gave up. Letters came that, they say, the payment was over and all that. Then letters came, they say, give me money. But now a letter has come by paper mail, saying that you owe 88 euros or something related to international collection agencies.
Actually, the question is: how real are the threats of the Germans? From my data, they only have a full name and a home address. The card of the stick, on which he then paid, is blocked. How would you do it to get rid of it?

Answer 1

Pay :). 88 euros - not 888, not such a big amount.

Answer 2

Yes, this is extortion. all normal services in case of non-payment stupidly turn off the service.
now 88, and if in 5 years they would write? there would be 1000 euros chtoli?