MAG Aerospace Systems Engineer/Technical Advisor reviews

I've been selected amoiung with 20 other people when they really needed 5. First we made an unpaid training of 3 days. Then there is a one month probation period when they fired people almos every day. The trainer is not fun at all and just want slaves. He told me that I was fired because of a lack of respect. One week later, the HR called me to sign the contract. They wait until the end of the month to pay the few day after the training.