My advice , join auto-censored. lots of advice there.
I'd rarely ask on the phone, unless I was pretty sure they were a FS not FBSM place.
Either during the massage, you'll get credit card swipes, touches of your arse, cock, balls, or she might just whisper in your ear.
Don't let your cock rule your brain - I never pay more than £10 for HR. I never have B2B first time. I like to experience how good their HJ skills are.