Hi Aum,
I apologize for the inconvenience but rest assured that the refund has been issued from out end on 01/13/2016.
In this case, I may not have the exact information why you still haven’t received the refund, what I can suggest is to contact your bank ask them the status of the issued refund on your credit card, because there are times that the refund processing vary depending on your financial institution. I appreciate your understanding with this matter.
If there’s also a way for you to present them a copy of our conversation as a proof that you have already contacted us about this matter, that would be helpful. In that way they can verify that there’s really a refund issued on your account from iTunes Store.
I hope you will find this information helpful. I would also like to ask that you respond to this email after your consultation with them. Thank you for your cooperation, Aum.
Sincerely,