Faulty aero x coils

I purchased a 3 pack of aero x coils. I changed the coil 2 days ago. It is only giving a burnt taste. I followed all procedures for changing the coil. This is now the 2nd time that I purchased coils in a 3 pack and have recieved a faulty 1. Im using the aero for about a yr now and using twisp for about 2 yrs. I never had this issue with my edge! So disappointing and frustrating!! Why are we paying for damaged goods???