Hold on, don't pay any money now and let them block full QR 6,000 from your final settlement amount. Even you borrow money and pay now, they will still block the full credit limit amount from your bank account once they receive final settlement amount as a guarantee for 45 days.
I don't know about Doha bank, but most of the banks in Qatar are doing the same and hence you need to pay and cancel the credit cards at least 45 days before leaving Qatar for good or take a risk of leaving this amount in Qatar while travelling and take this money from out of country after 45 days.
Hold on, don't pay any money now and let them block full QR 6,000 from your final settlement amount. Even you borrow money and pay now, they will still block the full credit limit amount from your bank account once they receive final settlement amount as a guarantee for 45 days.
I don't know about Doha bank, but most of the banks in Qatar are doing the same and hence you need to pay and cancel the credit cards at least 45 days before leaving Qatar for good or take a risk of leaving this amount in Qatar while travelling and take this money from out of country after 45 days.