Dishonest mechanic

I had my car towed to this mechanic because the transmission wasn’t working — he told me my transmission was shot and I needed a new or rebuilt one — a huge job/ very expensive— well after hours I brought my friend who knows cars to
Look at it since it was accessible in the side lot -/ turns out the hose that feeds the transmission fluid in to the transmission had come loose, pouring out all the fluid — a .80 cent clamp fixed the problem-/ and Carmen’s Auto proved to be dishonest — evidently they are good with regular customers-/ I was a new one