Hi amaze:
same thing happened to me I applied for family visa on January 02 and it got rejected after 2 weekd then I went to office talk to capatain and insisted for interview, one captain refused then waited for another captain he gave me interview after 2 weeks whciah was on January 30 and they told my wife who was in interview to check status after 3 days. still waiting.
In you case check your receipt if he wrote something in arabic for interview date. if not go and get interview date.