Maxbhi / Elcotek Telecom — Refunding problem

I have ordered a mobile battery at[protected] but after 10 days they said product is not available so please cancel and I have cancelled it's been almost 20 days there is no refund and if iam trying to complaint in maxbhi website. They are not responding and the website also not taking my complaint earlier when i ordered battery. If I raised any request then with in one hour they used to call back and responded but now a days no one is responding