I already have moved this issue to our collection company, who will contact you through their local repressentative.
I believe collection fees cannot anymore be avoided as you have refused to pay this continuously althoug I've asked many many times.
I did not have any other possibility, because you have not paid although you promised to pay it.
I have your mail where you suggested same than below and I sent you my reply where I told you that please do so, but you never paid it althoug we already agreed it.