I was sold a not working Nasty Bar at an Astron Garage in East London Mdantsane

yesterday i bought a nasty bar limited addition at Astron Energy Garage in East London in Mdantsane for R225 after i bought it ,it gave me problems by not working properly its not the fast time i bought a vape the and it gave me problems , when i bought it at first it started not working and it was after 4 hours i have bought it , i went there to return it because the nasty is full but does not work , they returned it and gave another one it did the same thing i went there and they said there’s nothing they can do about it , i am concerned about my R225 because i dont work and i won’t have another R225 to buy another one , it didn’t even last 5 hours and gave me problems and they don’t want to return it , i am very disappointed in their service and in their items because it shows that they sell thing that have problems