Hello all

Im seeking motivation to start playing again.So heres my story.
After i bought my new bass "cort gb-75".I was in heaven...Even gigged once infront of 150+ people.However i lost my motivate on playing bass again.The reason?Before the gig we were testing the instruments then the audio supervisor told me that something wrongs with my bass.He mentioned it isn't coming right to the monitor,then told an assistant to change some numbers.. sorry i don't remember what he said exactly.So after changing em the problem consists so he yelled at my "cheap bass" i was so ****ed up and wondering wats wrong.But yeah this wasn't enough for me to quit i ended rocking up on stage with no errors at all.
So after this i have never touched the bass again even my personal music teacher abandon me.I was so lazy to read music theory etc..
Im a bit dissapointed from my bass but what wrongs with it?is it the electronics fault to make the audio supervisor tell this?Can i fix it?.Also the strings i use are ddadrio