Got upset about facilities on a new downhill ride (8)
I believe the answer is:
toboggan
'downhill ride' is the definition.
(vehicle for going downhill in snowy regions)
'got upset about facilities on a' is the wordplay.
'upset' is a reversal indicator.
'about' means one lot of letters goes inside another.
'facilities' becomes 'bog' (both can mean toilet).
'on' says to put letters next to each other.
'a' becomes 'an'.
'got' backwards is 'tog'.
'tog' going around 'bog' is 'tobogg'.
'tobogg'+'an'='TOBOGGAN'
'new' acts as a link.
This may not be correct. It may be part of another bit of the clue.
(Other definitions for toboggan that I've seen before include "Frame for sliding on snow" , "Snow vehicle" , "Sled with boards curved up in front" , "Narrow sled for snow" , "Sliding vehicle" .)