Sensitive Vape

On Friday 15 June 2018 i went over to your store in Gateway and i bought a coil (for R50.00) only to find out it was defective. After the guy at your store installed it etc. i gave it the usual five minutes for the liquid to soak in (after refilling it) and i smoked it and got a terrible burnt taste off of it. After giving it more time to settle in it still tasted the very same. So i went back to the store and reported it. So after the guy made a call (not sure whether to the owner or manager) he advised me that he can't replace it for free but he can do it for half the normal price (R25.00) which i had agreed to. The very next day (Saturday 16 June 2018) the unit slipped out of my hand and fell on the floor after which the unit would not work. Only to find out that the coil was so sensitive it had gotten damaged and i had to replace it at full price (R50.00). So over two days i had to buy three coils at a total cost of R125.00. I feel this is unfair and your products are way to sensitive. I need to be compensated for the inconvenience of having to take time away from work to get this fixed and having to pay for three coils when i only needed one.