I'm sorry to hear that you had an uncomfortable experience with the massage therapist. Tipping practices can vary depending on the region, culture, and industry norms. However, it is generally not considered appropriate for service providers, including massage therapists, to demand or ask for a higher tip directly from the client.
Tipping is meant to be a voluntary gesture of appreciation for good service, and the amount you choose to tip should be at your discretion. The standard tipping rate for massage therapists in many places is typically around 15-20% of the service cost. However, this can vary, and some people may tip more or less based on their satisfaction with the service, the therapist's skill, and other factors.
If you felt pressured or uncomfortable with the way the massage therapist approached the issue of the tip, it's essential to remember that you are not obligated to increase the tip amount beyond what you are comfortable with. In situations like this, it's appropriate to handle the situation politely and firmly. You could say something like, "I appreciate your work, and I tipped based on my budget and the service provided. I hope you understand."
If you encounter a similar situation in the future with any service provider, it's okay to stand your ground and tip what you feel is appropriate. If you believe the behavior of the service provider was inappropriate, you might consider providing feedback to the management of the establishment or considering whether you want to return to that particular place for services in the future.
Remember, tipping should be a voluntary and positive way to show appreciation for good service, and no one should feel pressured or forced into tipping beyond what they feel comfortable with.