I think we've all been there at some point. I'll admit it would hurt my feelings, but I got over it. Like when I first started to play for my old church, many people would tell me I need to add some "umph" to my hymns, it just got to the point where I said, "Look, no offense to you, but I can't play it whatever way you want me to, that's not what's in the hymnal. What's in the hymnal is what I'm playing, but I'm sure with time as I grow to learn more about gospel music, I'll play the hymns with whatever "umph" you're talking about, but in the meantime I'll play it the way that I'm comfortable playing unless you're willing to help me learn?"
Of course, they couldn't offer help because they couldn't play an instrument so they left me alone. Sometimes you just have to tell those people that people play on all levels, and with time and God's blessing, you'll get there, but in the meantime, they have to deal with what you have and be grateful that you're willing to share your talent with the church that God bestowed on you.