Is It Appropriate to Burn an Accessory Nipple off with Liquid Nitrogen?

I have what I thought was a small mole in front of my axilla for as far back as I remember. 2nd one grew after breastfeeding & texture of 1st changed (became nipple like!) I went to dermatologist recently He burnt off skin flaps with liquid N2 including the 2 structures. Most healed quickly but 2 axillary structures hurt & were v.sensitive. I consulted a GP She immediately classified them as Extra nipples! What do you recommend other than demanding my money back and going to a different Derm?