Wal-Mart Canada Corp

They hired me on and I was early everyday by 45 minutes and ready for work. They came to me last week letting me know that I was doing well. It felt good that my hard work was being noticed. I received my days off and went back on Friday night same as always. I start at midnight and by 2 am I was handed a letter saying I was not meeting Walmart expectations. They took my ID and kicked me out, with no buses running at that time of night. I was told to call human resources on Monday. I called every 15 minutes and left a message with my phone number. I NEVER RECEIVED A CALL BACK. I have a child and a disabled mother to take care of. What do I do now? I'm upset at the way in which Walmart handled this.. with no consideration for my safety at night and telling me I'm doing well and then letting me go without a proper explanation. Will be giving a lawyer a call.