LT Online Store — No response from their support.

I have ordered the following.
Orders
#[protected] रु 837.80
Apr 22, 2020 10:13 am
1 user, 3 year, kaspersky total security
Delivery: activation key via email.
× 1
रु 826
Subtotal रु 700
Shipping रु 10
I-gst-18% रु 127.80
Total रु 837.80orders
#[protected]रु 837.80processing
Apr 22, 2020 10:13 am
1 user, 3 year, kaspersky total security
Choose delivery: activation key via email.
× 1
रु 826
Subtotal रु 700
Shipping रु 10
I-gst-18% रु 127.80
Total रु 837.80
Shipping info
Sailendra prasad
C/37, sector-14, rourkela, 769009, odisha, india
E-mail ✉ (रु 10)
Shipping info
Sailendra prasad
C/37, sector-14, rourkela, 769009, odisha, india
E-mail ✉ (रु 10)

I have tried calling them daily. Due to this my pc got infected with viruses. Now want refund from them.
Please help me get the refund. I have also emailed them but no response at all.

Thanks and regards,
Avishek prasad
+91 [protected]