My ordeal

I worked with an organization where I was to be given stipend as salary with the excuse of been on probation. Doing this Job, I was seriously looking forward to places I submitted my Resumé for interview.
After working with them for a month and a week, (salary not yet given). I got a mail to come for an interview in another better company.
Tryna observe protocol, I brought to their awareness in a formal letter about my going for an interview which was granted.
But on my resumption, I was handled sack letter with no salary. Meanwhile, I asked for the stipend but I was threatened with police. So not to end up in cell because of chicken change. I took their leave and never return there.

Location Abuja FCT
Company was owned by Igbo woman and being managed by her younger sister.

Need opinion
1. Is it improper to go for an interview(in another company) when on probation.
2. Why do you think I wasn't paid?
3. What should I do?

Pardon my grammatical error.

First opinion, You did wrong by telling your company you going for an interview in another company I don't have much to say about that.

Second opinion, check your letter of employment, you must have violated one of their policies they can use against you whenever you make a move.

Third opinion, you just have to let go, forget about it, their are many companies out their looking for people to use and dump, I've worked with one at VI left them with 2mths salaries