Hi Katanakid
You need to check the meeting records. the levies are set by the owners at the Annual General Meeting. Its ONLY owners who decide the levies; so the other owners must be picking them.
Check what the proposed levies were they may have been a lower recommendation, who voted to have the current levies that high. It maybe that the levies are high because no one goes to the meeting and just send a proxy to the strata manager and the manager can’t change levies.
Go to the meeting, vote for the levies you want to have, you may get them or not but you do get a vote.
dwa is right get involved in the running of the property, after all its part yours.