Bad after sales service

I bought a ring 22 Feb 2015 and send the ring for resizing and to attached my other two rings together with the 3rd. The rings took about 3 weeks when I received them back. I hade the ring about 2 weeks when the ring broke right where the ring was made bigger and I send the ring back on the 10 April 2015. Again it took about 3 weeks before I had my rings back. About a month of wearing the ring it broke again. I send an email to head office to inform them of my problem to make sure that they do not treat this as a normal repair and that this is a problematic ring. She emailed me back saying is should get the repair dates and numbers form the shop and also POP. I emailed this detail 8 June 2015 and waited for a answer I only got reply when I went to the shop to get a refund this was 18 June 2015. I rep**** the same day to ask for a full refund for the ring and the job done while I still have a foot to stand on and no reply from them yet. I use to buy from them and believed in their products but I cant anymore. I have been walking around with out my wedding band (As the 3 is fit together) for about a month. This is not what I expected from their after sales service. very disappointed