This is called no other than modern slavery....
These companies want to use you. They make you work and at the end they don't pay your salary.... and once you ask them release they don't give you too.... and governments still protect companies....

You even cannot leave the country and runaway... because you need letter at airport.... this is like slave in a jail.

May ALLAH bless Muslim and Give Hidhayah... before it becomes late. Tell me any non-Muslim country doing same to its workers which we (Muslims ) are doing......