RTO India — Driving license approved on 31.08.2022 but still not received

My driving license was approved on 31.08.2022 via application no [protected]. But still after 4 months i have not received my driving license. The status is showing that application is on printing stage. Whenever i visit my rto office ( rto lakhisarai, bihar-811311) the office told me it will dispatched within 15 days but they are doing nothing. My application is on same stage as early. Kindly resolve the issue.