Fire-Boltt — Refund not received since 4 months

I have purchased a product on may7th 2022. I have mailed several times for refund as the watch has been collected by them from my place and even refund is approved but i havent recd any response except for getting it done. Can a refund of 2499 take 4 months when they r promisin a refund in 6-7working days? They are not receiving calls, when i call on their call centre. Just dont know wht to do now?