Breakdown of Om servicen är dålig vill de returnera allt.
vara
to be
de
they
vilja
to want to
allt
everything / all (neuter)
Questions & Answers about Om servicen är dålig vill de returnera allt.
Why does the sentence say vill de (want they) instead of de vill (they want)?
Because of the V2 (verb-second) rule. The entire 'if' clause (Om servicen är dålig) counts as the first block of information. To keep the main verb in the second position, the verb vill has to swap places with the subject de.
Would the word order be the same if I used eftersom (because) instead of om (if)?
Yes! Both om and eftersom are subordinating conjunctions. If you start a sentence with Eftersom servicen är dålig..., that whole clause counts as position one, so you must still say ...vill de... in the main clause to keep the verb in second place.
Why do we use allt for 'everything' instead of alla?
Allt is the neuter singular form of 'all', and it is used as a standalone word to mean 'everything' in a general, uncountable sense. Alla is the plural form, used for countable things ('all of them') or people ('everyone').
Why is it dålig and not dåligt?