Just don't try to grow or get a full time, oddly enough, they have a lot of spots for part timers but not a single opening for people searching for a Full time.
They will try to find any possible reason to justify the lack of interest in encouraging growth or lack of "opening positions" for people giving their best at the job even if you already have one year or more with them.
They will try to justify their "decision" with any possible minor reason (tardiness, if you got points for being sick, etc) to avoid giving you the opportunity or a clear answer in why they "don't have any opening yet" but they keep hiring part timers every month and yet expect the existing employees to do the 40 hours of a full timer without being a proper full timer position.
