You can pick up your free replacement phone from a Proximus Shop near you. You're reachable again in no time and you can have your current phone repaired. Or choose a new one.
This way you're reachable again in no time at all. Simple, isn't it?
One more tip: be sure to block your SIM card if your phone has been stolen.
Check out the Smartphone Omnium coverage: an equal model smartphone will be sent to you at home1 by the next day. Wherever you are in the European Union, for €12/month.
This way, you always stay close to friends and family. Great, isn't it?