Can confirm that there are no DUVETS on short haul flights in EK F. This has always been the case although I do not understand why they choose to do so. SQ will provide a Givenchy one in F on any flight no matter what the duration of the flight.

Must say that the OP has had a very very bad 4 flights and he/she must complain no matter what because this is just not done even by EK standards. I am sure that the EK management will not take this lightly because inconsistencies can be there but not like this. This is rock bottom already and must not go without being reported.

Safe Flying