Boat — Not received my order which was ordered 3 months back

I have ordered boat rockerzz 261 bluetooth earphones (blue) on March 8th, 2021. Due to small issue in the Pincode my order is returned back to warehouse on 25th March.i have mailed to the imagine marketing mail id stating the same and asked for change of PIN CODE. After that I haven't received any response from them till now. I have emailed them 6 times till now but still I haven't received any response. I can understand due to pandamic, it's difficult for them to meet all the grievances in time but that doesn't mean the company will test my patience. I think I have waited patiently enough number of days.