Airtel — Call Barred by itself and not getting deactivated

My airtel mobile [protected] was working fine when i came in saudi arabia in Dec 2021, i was always making recharge on this no. to keep my no. activated and working but since 3 month when i making call from this no. always showing call barred while making call. i tried to make it deactivated but can't. Please make it free from call barred my no.