Could you please give me an idiom, proverb, or saying that describes someone who exploits and take advantage of others?

An idiomatic expression that has a negative connotation.

Or maybe to say that one only pray when he/she needs God.

Or something similar to this (I quit praying when I got my prayers answered).

Thank you in advance.

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  • Such a person uses others [as if they were merely tools, instruments with no rights and no feelings, merely to be left on the shelf when finished with]. – Edwin Ashworth Oct 31 '20 at 14:16
  • One example of this is 'an employer who forces his employees to work long hours/overtime, but doesn't pay very much.' – Kermit Oct 31 '20 at 15:56

User is what you’re looking for. Third definition. enter image description here

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