This conversation happened to me today in ST:

Tank: Yo, healer you need to beef up healing
Me: We wiped because y'all stood in fire
Tank: I mean don't you have cure II/III?
Me: Yeah, and I use cure II.
Tank: Odd, I keep seeing Cure I. I don't think you're using Cure II.
Me: I use it when you need it. Otherwise I use Cure I to proc free Cure II, and it is more mana efficient. I assume you have never healed ever.

We eventually got past the conflict.

Of further interest: I am a healer. Sleeping a mob counts as healing for me. In fact, putting a mob to sleep is the cheapest and strongest heal I have. I wish tanks/DPS would stop trying to faceroll the content and pay attention to what the healers are doing.