refund not done after a full month of request

I logged a complaint about the cellphone and they took it back ,in two days from after that and ever since i request a refund as i could see that the phone was no longer in stock and that was in March already .Ever since then i have not got my refund as yet .I did contact them and i was asked to send my statement from the date of the purchase,which i did as well but ever since there has been no word .I called again yesterday and i was put on hold for 5 min and then they dropped the line .I then sent an email the same time and i just a response which they are saying the finance department will look into to it ,and that what the guy whom asked me to send an email ,told me that the finance department is looking at it .But i'm not getting any joy at all .I don't have a phone at this current moment and they are sitting with my Money so what must i do now? i'm tired of borrowing phones from people !!! This is so unfair ,whats so difficult with doing a reversal? or give me the same phone with that amount ,which initially is what i wanted and all of a sudden i got a credit from take a lot account .