cd86
You're going to need to drop a lot of subtext here if you want useful answers.
Are you going to a happy ending massage parlor and complaining about the quality of the actual massage? Go to a real massage parlor for that.
Are you getting a bored handjob and you're looking for a blowjob or sex? You'll need to shop around providers AND build trust/rapport before they'll offer it. It might just not be available in your area.
Are you just looking to cuddle after you finish? You might get that if you find the right provider on the right day and build the mentioned trust/rapport, but you'd probably be better off finding an escort who offers a Girlfriend Experience. AMPs want you finished and out the door to open up tables.
Are you going to a massage parlor that you think does happy endings and NOT getting a happy ending? Then it's either not that kind of place or they think you're a cop.
Assuming you aren't intentionally being provocative by asking this in a non-NSFW community, you will probably get more informative answers in !asklemmynsfw@lemmynsfw.com.
Her scene in Game of Thrones was a body double, Rebecca Cleave. Go back to 300 if you want to see her do a real one.