Was It Fair to Lose My Job Without Pay Due to a Trainer's Claims During Probation?

I was forced to leave the organization due to a trainer named Brunda, who claimed I was not giving my 100% after 23 days of joining.

I requested the organization to compensate me for the days I worked. However, they informed me that I was still in the probation period, which required a 15-day notice period. Since I left without serving this notice, they refused to pay.

I am seeking clarification because if the trainer did not provide proper training, and I still managed to give my best, it is frustrating to be suddenly told that I am not performing well. This led me to resign abruptly via email, citing the trainer as the reason. No one addressed the issue with her, and she remained in the organization while I was let go without compensation for the days I had dedicated to the organization.

I just want to understand how the trainer's actions were deemed correct, allowing her to continue working while I was released without receiving payment for the days I had worked.

These are the whims of the trainer and equally that of the management. You may console yourself that you are a loser of only 23 days' salary, although you may represent for the remaining 8 days after deducting the notice period, which cannot be lawfully denied to you at any rate. The question as to whether you had given 100% or not is a subjective opinion that could vary with perception.

Objecting to Salary Deduction
So at any rate, you can object to the deduction of the whole salary and demand its payment, at least for 8 days, which is not disputed.

Your action has been too hasty. It has been a reaction rather than an action. The trainer is entitled to have his/her own assessment of the trainee. Maybe it is too subjective. But it is a fact of life that such differences in perceptions exist in all professions, even in one's own life. Living with such situations is what constitutes life's experiences.