I am asking so that I can be informed when I call back.

Basic facts:

O class ticket LHR-DXB EK030 for Feb 5th. Flight cancelled.

Called to rebook, was told earliest date is Feb 7th. Took the seat.

I checked on KVS and I saw 1 O class seat for EK 030 on Feb 6th and 1 J/C/I (O=0) class seat for EK 008.

I asked to be rebooked on EK 008 and was told to pound sand because I was in O class and no O seats were available.

I then accepted EK 030 and tried to book the limo (to change it from tomorrow's EK030 for which I had it confirmed) and was told to, again, pound sand because it is within 48 hours.

Questions: Is EK obliged to put me on EK008 (Showing J1 C1 I1 O0) or no?
Have I lost the limo or is it worth calling back and pleading my case?

I tried to keep emotions out of this post and out of my phone conversation with EK as I didn't really have time to argue.

I'm not sure if EU regulations apply for weather(?)

Thanks!