ShopOnn — to my surprise, there is no link for cancellation.

Website:

www.shoponn.in

I have placed order for a lenovo tablet, since we ordered twice at different sites by mistake
to my surprise, there is no link for cancellation.
there is a page but it never opens
my order number is
ORN[protected] ON JUNE 21/06/20
i gave an e mail but there is no response
highly unprofessional
no one picks up phone at the tel number given