Netflix runs longer than 60 days?

I have on 15.10. Bought Netflix for 12 euro a month. The credit card had 15 euro, actually it should have expired days ago. Do you know what's going on or something?

You may have received a test subscription for 30 days

Nevertheless it would be on December 15th. Gone, I just heard from support that the remaining 3 euro by December 23rd. Be used up

Are you sure you only bought Netflix for a month?

Or have you taken out a subscription and just paid the first € 15 with the credit card and the further contributions are now accumulating because you no longer pay?