Spicejet has recently been cancelling a lot of flights over the past couple of weeks, or merging flights. As per the airline, this is the result of a restructuring going on at the airline where they are returning planes or having them come back at lower leases.
A lot of travel plans have gone awry as a result of these cancellations and there is no commentary on the SpiceJet website about cancellations and how to resurrect your travel plans from there.
Initially, the airline promised to resurrect these flights over a week, which are over 50 in number. However, it does seem it will take longer to do so, perhaps even all of December.
I happened to recently notice an online list created by Mustafa about the sectors that were being cancelled and how long were the expected to be cancelled for. While this is not an official list, it should give you a guidance if you are on track with your SpiceJet flight or not. You can check the list here. It is organised by flight number and the sector that is cancelled.
While there is not much I can do from around here, I really hope this is a temporary situation and all these flights are back in action soon.