Past tense: got over on
Not to be confused with "get over" oneself spoken to a pretentious person.
My former tenants really got over on me. They stopped paying rent, so I had to take them to court and evict them. It took months and cost me tens of thousands of dollars in lost rent, hiring a lawyer, and repairing the damage they caused. Meantime they lived in a three bedroom house for only two months' rent.