Refund

I received an sms from Evron that they request my banking details so that they may deposit my deposit.The sms was sent to my phone on 22 January 2015. I sent the banking details the very same day. I tried calling their line was always engaged. Today when I finally get hold of them, they tell me they have to wait for management. The contact person doesn't even bother to come to the phone to speak to me. She sends someone who is very rude and short tempered to give me the message. I sent another email just to follow up when will my refund be deposited and how much it is, but no one can give me an answer.