Exploitation of workers

applied...worked for 3 weeks...did all the job consulting inside and promoting outside from 8 to 17hoo mon to friday and saturday from 8 to 15h00..month end I was not paid after all the hard work..they said I'm still a trainee ( for whole of november)....a trainee who works alone in the shop sometimes?? Is there such a thing?...i did all the work like other consultants for three full weeks good people and they gave me transport money....