Just finished my first week also. Managed to complete several trial lessons, start 2 new students with lesson 4, carried out a proficiency check with a private owner and a check out for myself on a different type. The attitude of the club is to help new instructors get students, rather than leave them to pick up the crumbs.
Cannot advise where you might find another position, but your experience does not sound too good so far...
Hope things improve for you.