Street Style Store — No Response for complaint tickets

Address:

Office No.903, 9th Floor, Pearl Best Height 1, Netaji Subhash Place, Pitampura, North West Delhi, Delhi-110034

Hello Sir/Ma'am,

I have ordered a pair of boots on 21st November for Rs. 999 which I had to return (returned on 12th Dec) because of size issue for which I got a voucher as they do not have refund policy but now when I'm trying to redeem my voucher it's not working and I'm not able to process the order.
I'm trying to get customer support but there is no response for any of my complaint tickets. As they have clearly mentioned on their website that the response time is 24-48 Hours but it's been more than a week that I'm trying to contact them on all platforms possible (like Instagram page, mail, call) from 19 January.

Here is my Voucher code (111379). Also attaching the SS and video what is exactly happening when I'm trying to order for your reference.

Waiting for your response ASAP.

Regards,
Anushi Mishra,
[protected],
[protected]@gmail.com