Poor workmanship on geyser

Good day I had an insurance claim regards to my geyser my mixing valve was faulty they came to replaced it however they used my existing cover tubing cut it off from my safety valve and utilize it for the fix on the mixing valve . This safety valve just have a small piece on now if it releases pressure it will splash in the tray onto my ceiling incuring future damages , bare in mind this pipe leads till outside my roof . This is pure poor workmanship that I will never tolerate at all .