There is a serious moral situation here and I would like you to put yourself in the position of the person giving the 'free' coaching.
Most work or lifestyle coaches are self employed individuals who are trying to generate new business from genuine new clients who desire a long term partnership to help improve their life skills, prospects or achieve a greater balance between work and life.
Their generous offer of a one hour free session to a ligger who has no intention of taking out ANY coaching contract is a complete waste of their time and yes, it is immoral and unfair. Fine maybe if it is a large firm where the coach is salaried but as I said, if most coaches are self employed, you are effectively 'stealing their lunch'.
It is hard enough for self-employed people to win new clients without encountering an immoral serial scumbag like you. You admit to having done this more than once too which makes you a complete piece of dirt.
No wonder you need coaching but in reality, you need a firm kick in the groin for being so unthinking and selfish. Whatever do you actually do for a living?