I believe you have to work for a minimum of two years with the company before you are eligible to transfer within companies.
Even though you worked with them for 4 years ,Your present company that you work for still holds the right to deny NOC & RELEASE.So You can try asking the labor department but i feel you will still get the same answer.If you quit your job and go back, you will still have a ban of 2 years before you can come work in Qatar so without the NOC & RELEASE you have to keep working for them.
I believe you have to work for a minimum of two years with the company before you are eligible to transfer within companies.
Even though you worked with them for 4 years ,Your present company that you work for still holds the right to deny NOC & RELEASE.So You can try asking the labor department but i feel you will still get the same answer.If you quit your job and go back, you will still have a ban of 2 years before you can come work in Qatar so without the NOC & RELEASE you have to keep working for them.