Sangeetha Mobiles — Fraud Refund issue

I have ordered a mobile with order I'd SAN[protected]. And after one Month the product not delivered, but in tracking show the item delivered, then I complain they say technical issue, afterthat they didn't deliver .so I want refund and I call customer service, first they pick call then I tell the problem .then they don't respond my call and email.
Kindly take necessary action behind this reason and please refund my amount.