Poor quality and relationship with edgars

On the 23rd of feb my boyfriend bought me a beautiful ring from Edgars sandton Pandora. by 9th of feb stones were missing, pandora sandton exchanged it for me. I wore it twice and by 23 Feb more than half the stones were missing on the new ring.

I returned to edgars sandton 23 Feb and advised them i wanted a new ring but a different design because I am tired of this problem. (one with less diamonds)

They did not have my size, and gave me an edgars voucher.

I then (on the same day) went to edgars mall of africa, rosebank and eastgate. None of which have my size in that ring. After the terrible service from pandora stores in edgards and many excuses that they do not work directly with main pandora stores i called edgars.

I have requested I get refunded in cash the voucher amount, which they say they can not do. Im now sitting with a edgars voucher and no ring and no support to help get my ring.

please can someone offer me a solution because at this point i am looking at contacting edcon and pandora directly because I want my ring or the cash so I can get it from a proper pandora store so that I can receive after purchase support if anything goes wrong again.

Because it is not my fault all the diamonds keep falling out due to poor quality.