SICKENING SERVICE FROM AMAZON

I ORDERED THINGS FROM AMAZON 3 MONTHS AGO AFTER CONTINUOUSLY FOLLOWING UP WITH THEM WITH NO REPLY FROM THEM THEY REFUND ME HALF THE MONEY I PAID FOR THE PRODUCT.AFTER I DISTINCTLY TOLD THEM I DO NOT WANT A REFUND.APPARANTLY MY ADDRESS IS UNDELIVERABLE BUT WHY NOT PAY ME BACK ALL MY MONEY I PAID FOR THE PRODUCT.I AM SICKENED BY THE LACK OF SERVICE I RECIEVED FROM THEM AND WOULD NOT ADVISE ANYONE TO BUY ANYTHING FROM THEM EVER.THEY DIDNT EVEN HAVE THE DECENST TO APPOLOGIZE.