Xiaomi India — Trimmer not replaced or refunded and not receiving call

Address:

OPPOSITE TO NAVRANG THEATRE RAJAJINAGAR BANGALORE -560010

I given trimmer which purchased on amazon and when i visited mi service center opposite to navrang theatre rajajinagar bangalore -560010on 11-aug-2023 they said they don't have in stock and they will replace me in 1 week but not called me (mi service number [protected]),
I went again after 1 week to check and they said they will need 1 more week
after another week I got call from someone Anil saying they don't have stock so they will refund me on mi account but after sending mi account detail and they not replying or receiving call after 1 week they again saying next week
now they nor replying nor receiving call
I'm in medical line so I cant go again and again to the service center just to hear they don't have stock or solution and need 1 more week