I am most sure of the following:
* your 300-500 QR fine is not yet on the web, as it takes from 1 day to 3 months to show up !?.
* the 6000 Qr is a fine for passing a red light, some time some where, which you did not notice.
Thus you will need to pay it and wait for the other fine when you come back from your Eid vacation
Happy Eid every one