Have you got an NOC from your previous employer? If not, most probably your visa was cancelled already and imposed ban for 2 years. You have a wrong notions or thought that your previous employer took visa for you in order to block you to re-enter Qatar. No companies or no one will waste their time and money just to get visa for you for senseless intention unless if you have personal conflict with them. Maybe your ban is still effective as of this time, that's why you cannot get another visa from any company.
Have you got an NOC from your previous employer? If not, most probably your visa was cancelled already and imposed ban for 2 years. You have a wrong notions or thought that your previous employer took visa for you in order to block you to re-enter Qatar. No companies or no one will waste their time and money just to get visa for you for senseless intention unless if you have personal conflict with them. Maybe your ban is still effective as of this time, that's why you cannot get another visa from any company.