I got a mole removed, 2 grew back in its place!

Yeah. I had a mole on my side that stuck out a bit and irritated me because my bra strap always rubbed up on it and made it hurt.. so i got it removed, and when they removed it they said it might be a nipple(it didnt look like one at all, but i guess any moles in the boob area could be unformed nipples) so they tested it and never told me anything about it so that means it was clean, no cancer or anything. Well now there are 2 little moles that have grown in its place, they dont stick out like it did, but what the hell... has this happened to anyone? my aunt is a doc and told me she has never heard of it and to go get them removed because thats strange. i dont want to get them removed again cuz they dont bug me, maybe they just didnt remove all of it. Any thoughts...should i get them removed... again... then 4 more will pop up...