A very unprofessional way of hiring interns for wo...

A very unprofessional way of hiring interns for work , they hired me without payment and asked to fill data interview itself was over call for 5 minutes still I was interested in learning so accepted job.
There was no orientation or guidance when I asked 2 question for job and schedule call I got email from Martin that we are terminating contract.
A unprofessional people .
Don't accept jobs from them first they should know how to train people if they expect people to work for them freely like in full time job they should act professionally.