Must be the same issue, just called my uncle who lives in Goirle as well. Not to my suprise: same problems there.
Good to hear they have sent a guy to investigate, i doubt however they actually did. Suppose they could have told me that during the call earlier today?
Let's hope they are fixing it as we speak and it does get resolved this afternoon! And if not, you can fire one at their helpdesk again. Your advantage is they admit there is a problem with the 'wijkkast'.
Don't mind writing in English, probably isn't flawless either though!