Ford service is dishonest and a bunch of *******

Just had new alternator and a new catalytic converter installed.Took my car to Motus George to have the engine light reset.They failed and told me my car needed a new catalytic converter as well as a new alternator.The engine light was still on and it cost me R850-00.I took my car to an independant garage,they reset the fault codes,tested my car and charged me R350-00.