Apparatuur teruggestuurd, komt het goed aan?

So I send my return box on the 21st January and it arrived at your return centre on the 24th January 3SLFVZ256115829 on postnl. since you sent me the box without paperwork, i sent you the box to the address provided on your webpage under “if you didn't receive the box, please send it to us to the address

ANTWOORDNUMMER 10119

2400VB ALPHEN AAN DEN RIJN

”.

However, today 16th February i got an email from you stating “we haven't received anything from you”. Please, with the code above, see if you can find it in your premises. Thanks, Rita