In my opinion a fast, easy and effective way of making an appointment with an escort if you’re hearing impaired would be to first send the escort a PM or email, explain to them about your disability, tell them the number you’ll be texting them on the day of the agreed appointment so they’ll know its really you (and of course use a pay-as-go sim so you can make a one off appointment using this number and never use your private number) and also possibly agree a password with the escort that you’ll include at the start of every text you’ll be sending leading up to the agreed time and location of the appointment.

Just my thoughts on the subject.