You give resign and they cancel your RP what is fraud in this ???????????
You try to be smart that you will use that company VISA to travel free in GCC. No 1 can tolerate this cheat from you.
Company is required to cancel your VISA immediately as you resign as you are company responsibility if you did something they will be held responsible for that.

Now you are calling them fraud and want to go to other country on their RP. People like you are destroying image of their other county.
Now stop crying and go back to your country and wait for 2 years.