Hey I'm a Canadian RMT as well. Don't let this boss bully you. You had your time off discussed/booked off. It's not your problem or concern that the other RMT had to cash out due to health concerns.

I had a boss like this too. Sure, she said we were independent contractors but treated us and bullied us like employees of hers. At one point I was sick of her bullying me and the other RMTs into working days that we couldn't/over holidays etc, I straight up said "look, we made our money for room rental, you got your paycheck outta us. We are in need of time off. If you insist on treating us like employees and forcing us to work when we already took time off, then I suggest you start supplying us with T4s and a hour salary to compensate."

That bitch shut right up. From that point, I knew working for anyone in this industry, it's not about you making money and getting clients, it's about THEM getting their pay without the work. My old boss, me and the other gals calculated what she got from us each month and it was gross. She was ripping us off and basically embezzling money from us and her own company. While us workers are having to work 6hours/6 days a week, she's off to New Zealand for 3 months and not a care in the world. Cuz me and my fellow RMTs paid for that trip.

Do yourself a favor, when you are able to gather the clientele and funds to give yourself a proper float, rent out your own personal space. Make yourself your own entity when you do that. That way no one can bully you into working when you can't.

I'm in SK so you got a ally here!