@zainreem so, I guess data was working fine and just stopped working?
since PM site has some cache problem and might show you wrong info, you might want to check again using Incognito mode to confirm if you have any data left
if confirmed you do have data left, check if you have set up Mobile data limit on your phone if you have an Android, if it is enabled, disable it first and try
Also, try to change your Preferred network type or network mode to 3G in case your have some LTE issue in your area
if nothing works still, you might want to click Reset all networks and see if it helps. But please be aware that this will actually reset your saved wifi connections as well and you need to join them back after
