Over the last 4 weeks I have emailed 3 times and
called by phone once, leaving a voice message.
So far no reply of any kind.
Any suggestions ?
Get used to that feeling. You will get it over and over again, once hired.
Do you have a problem with your accomodation? With your bank account unjustly blocked? Have you been arrested due to a screw-up in any jingly office? Has your superior shafted you simply by insinuating something? Do you urgently need some days off because of a problem back home? Does your payslip show wrong?
Try calling for help ...... and you get the above. Get used to it quick.