Damaged product

So I bought a waist trainer at Just undies in Musgrave center Durban about 3 weeks back a day after I purchased the first waist trainer I had to return it because the sowering was off plus the spirals we’re coming out. 3 weeks down the line I have the same issue with this waist trainer mind you it cost me 700 rand and for it to just tear like that is really not on Just undies should review their product. Not happy at all with product