Temporary Reconnection with KPN after Ziggo can't install

Last month I recently switched my internet connection from KPN to Ziggo because they were offering a much better deal. However, despite having my Ziggo connection for two weeks, their internet connection is not yet working.

When I contacted Ziggo's customer service about this, they asked me to contact KPN to see if a temporary re-connection of KPN's WiFi is possible while Ziggo fix their internet problems. Unfortunately, I cannot find out where to reach KPN's customer care to see if this is possible.

I have already paid KPN the complete amount for the month of November, even though I have used KPN only for ten days. Is it possible to re-connect my KPN WiFi until the end of this month? Please let me know. 

If a customer service rep would contact me or tell me where to reach them I would be happy to share my details.