Bad customer service

I bought an engagement ring in June 2020, stones fell out in November. I didn't know there is only 6months warranty and decided I'll take it in first thing January 2022 as I was out of the country and only returned in January and all my receipts and certificates was kept in my safe here in SA. Sales person told me they could only book it in of I was willing to pay for repairs. If I knew about the 6months I would have sent an email in November already

I have sent an email to customer care with no response yet....