I own a 2010 Toyota Prius and had an oil change service last month. Yesterday while I was driving, the engine shutoff due to low oil warning and oil pressure so I had to get it towed to a nearest toyota dealership. Upon today, the mechanic at Toyota discovered that I was running on empty oil and caused some major issue in the engine, and further inspection, they found out that the car was missing the oil plug as it had pop off from time to time. Midas (previous mechanic) didn’t tighten the plug, toyota contacted Midas and discuss the problem, but Midas take zero responsibility despite me having the receipt for previous oil service. They tell me I can get a lawyer to resolve the issue. I’m on a tight budget and it would cost $700 to rebuild or replace the engine. Should I get a lawyer to discuss the issue and how much would it cost to do so?