I also have the similar experience with Tiger Airways Singapore, my flight departure from Guangzhou to Singapore with flight number TR2983 on 11 June 2013. When I arrived at Changi Airport, I found that my luggage was not there (conveyor belt) for baggage claims. I have reported to the Lost&Found counter about it, and after checked they told me that there is no baggage such Tag number arrived to Changi airport, so possibilities my luggage still at Guangzhou Baiyun Airport and not it was not flown by Tiger Airways Flight number TR2983 together with me.
Lost&Found Counter at Changi Airport, made a report (Property Irregularity report) mentioned that my luggage lost/delayed and then sent it by email to Baiyun Airport.
Due I must continue my flight to the next airport (Indonesia) at the same day, so they said "better you just leave it with us" and we will inform you once the luggage send to Changi Airport and forward it to the Airport where my location is.
It has 11days lasting since my flight on 11June 2013, and they have not informed me yet about my luggage to date. I have follow up about it by sending email many times to Tiger Claims and Lost&Found SATS Changi Airport but NO Feedback, and after the 3rd times of my emails, finally there is a respond from Tiger Airways Baggage Claims
Charles Taylor Aviation; they replied my email and only wrote:" Sorry for delayed responding, we are still looking on your matter and will revert to you".
Until today, 21 June 2013 there is no more respond from them, and I am still awaiting my baggage will be sent back to the Airport where I am living as promised by the man at Changi Airport Lost&Found counter.