Timepieces International Did not refund my Credit Card after Acknowledging Receipt of Returned, Defective Watches Ft. Lauderdale Florida

I had ordered and returned two watches from Timepeices International. The controls on the silver watch were broken and did not work at all.The second hand timing hand did not reset to 12:00, but slightly to the left. I
returned them a week after receiving and tracked the package. It arrived at Timepieces International's facility on April 15th, 2015. 

USPS Tracking:
https://tools.usps.com/go/TrackConfirmAction?tLabels=9505510712335103022433.

It is now July 2nd and they have:
-Acknowledged receipt of the watches
-promised refund within 30 days
-did not respond to my emails for over two months
-said they were busy and would take care of it
-then, denied they could verify receipt of watches
-denied that the tracking number worked
-promised a resolution and refund (twice)
-now they again are not responding to my emails or to emails from 
Amazon Payments -or- the Better Business Bureau

I would never trust anything from this seller. They essentially stole $200 from me.