BAD COILS

Good day<br> <br> I love my Twisp, i am not a frequent smoker of the twisp i use at night and over weekend... <br> <br> I bought 5(the promo) coils online, i put in a new coil, the next day there was no more vapor and a burning taste, so i replaced the coil again and the same thing happened. As i have 2 twsips i put a new coil in the other twisp and surprise surprise same thing. So what i would like to know is are selling damaged goods as a promo? is it a faulty bach or what? as i said i love my twisp but this not good... what do i do now? put in my old coils because im too afraid to take the chance on spending more money on something that obviously doesn't work.