DTDC Courier & Cargo — no refund and item missing

Address:

Hyderabad, Andhra Pradesh, 500086

I mailed a package to Surat. Due to a small mistake in the address the package was returned back with out even consulting or calling the customer. I called every branch in Hyderabad, Surat and Mumbai to change the address but no one was ready to help me. I demanded them a refund and they are not even refunding my 1099.00 they charged me. One of the item was missing worth 1199.00. I submitted a letter and no one responded. DTDC needs to refund me 2199.00 but no response from them.