Refund sequence number is zero in intimation order from last 2 yr and not received refund

for me 2023-2024 ITR orignal intimation order recived with due and refund sequence number is zero ,then done rectification for same 23-24  again for rectification intmation order recived but refund sequence number is zero in intimation order  and not reicved refund . Same for year 2024-2025 intmation order recived but efund sequence number is zero and refund not recived . account validated ,asked demand team any due so no due ,please help me ,srugling from last 1 yr.