Sony India — Complaining about sony walkman

Address:

Flat number 102, The address,, 46, Viviani Road, Richards Town,

I purchased Sony Walkman (Still under Warranty) NW-WS413 on Dec 14th 2020. Since then it developed snag and I have replaced it twice (4 trip in total- 2 to drop off and 2 to pick up) to already at the nearest Sony Service Centre in Indiranagar:
No. 237/240, 13th Cross,
Chinmaya Mission Hospital Rd,
behind Shanthi Sagar Hotel, Indiranagar, Bengaluru, Karnataka 560038

The same problem persists even with this piece.
I am frustrated and tired with this experience and want to return to the company with full refund. Company customer care has no athority to resolve the matter. I have no choice but to keep the default product with myself which is still under warranty