Corporation Bank — refund issue from amazon of rupees 9059

Address:	Davanagere, Karnataka, 027417
Website:	www.consumerhelpline.in

I have purchased mobile through cash on delivery from amazon due to some problem i returned the mobile back so for refund of money they amazon customer service told to update bank details and then refunded my money back to my account but it's not reflecting in my account but again i contacted amazon service given the reference number of my refunded money and amazon cousins service told to file the charge dispute on the reference number given by them and they told to contact corporation customer service but i didn't get good service from them and again i contacted to branch but in the branch also there is worst service they are not ready to file the charge dispute

So plzzzzzz help me to get my refund amount back