Hi - I bought a twin door firdge from a seller Zasem ([protected]) for AED 1900 while trading my old fridge as well He came to deliver the fridge and said to start it in an hour when I plugged it in and now more than 20 hrs the fridge has not budged. neither the fan nor the compressor is working He is not taking calls as well What is suggested in such cases where the seller took the hard earned money