So my tattoo artist fucked up a couple of days ago and I have bad ink on my shoulder. Any tattoo removal tips (as in what I can expect when I get this bullshit lasered off)?

Also, I’m going to email them tonight or in the morning and then demand my money back. But, while I can be plenty assertive in person, I’m having trouble laying out what needs to be known re: the email. And I like the shop though that particular artist let me down, I have another stellar tattoo from them that I love. So that’s making this very hard. Please help.