I had been an apprentice carpenter since February of this year. 2 weeks ago, i was put on a probation period where everything I did was heavily looked over because I left a job with admittedly poor quality work due to lack of training for the specific task at hand, or supervision, and needing to use equipment i was not qualified, or thoroughly trained to use, under an operating condition the equipment specifically states not to use it (on an extreme incline, the tip over warning alarm was going off for 3 days straight) After expressing my discomfort toward using said equipment while its literally telling me to not do what im doing, as well as feeling like i was forced to finish the job on an unrealistic deadline and having to be on site 4 hours past my normal leave time, due to the unrealistic deadline.
Moving forward, I made sure to listen and take notes and make sure I didn't miss anything or mess anything up front that point on, this week, we had a major heat wave and i was told we weren't going to work through it, I couldn't afford time off so i told my boss I would do some much needed maintenance on his truck while he takes the days off. Come Monday, we agree that I am going to do a brake job and an oil change (I'm mechanically inclined so this is fine with me, as long as I'm getting paid). I run around for parts, do his front brakes and oil change, takes me until about lunch time, so I run over to meet him and tell him I'm not done yet but I'm going to grab lunch and finish up after (rear brakes, recycle oil, clean up, etc) making sure that his truck is usable before coming to a stopping point (in case he redirects me to something else). He says to just help organize the shop (separate location from where I was working on the truck) for the rest of the day after lunch since some clients were coming by, and we'll finish everything else another day. I listen, as an employee does to a boss. Come Thursday, i get pulled aside 15 minutes before my shift is over, and fired for not finishing the maintenance work I originally agreed to do on Monday, due to being told to do something else. Thoughts?