Request for new subscription cancelled - how to resume it?

Hi all,
I subscribed to a new internet package with TMobile. I received an SMS that he router will be delivered but no delivery was done. Then week later I received an email that the request for the new subscription was cancelled.
After several attempt I was able to talk with customer service. It seems I inserted the wrong house number, the router is at the PostNL office, but they didn't know how to handle it. I called again since yesterday, no success to get somebody at the phone.
I would like to correct the address and have the subscription but there is no way I can get in contact with someone. i tried all possible sections on https://thuisservice.t-mobile.nl/ but no chance I can send an email. I wrote on Facebook. Nothing.

Was that difficult they would have called me when they realized was a wrong house number? Is that difficult to have an email and request to subscription?

So I suppose I have to ask again and wait for 3 weeks, but in this case I will do it wit Ziggo, at least they have a better way to contact them.