Eerste factuur en een tweede factuur?

Hello @Sebastian 1984. Generally we do not charge the same invoice twice. It could be that you have paid an invoice yourself and that we followed with a direct debit. In which case you'll automatically get back your money within 2 weeks.

Sometimes, however, the payments are not for the same invoice. Even though it looks like it. If you want to know for certain, you can always give us a call at 0800 0402. Our department Collections can look into it for you. 

Ik denk dat het gewoon 2 verschillende factoren zijn, en dat het probleem al lang opgelost is.