Poor quality of coils. Oils wasted

My previous complaint with Twisp was for the same issue. Ill admit i was very impressed with the quick response to my query as well as the 5 free coils that where delivered to my home. Unfortunately, the problem has persisted.<br> <br> Coils are lasting no more the 3 or 4 days before the taste of the oils in the tank is completely non existent. The amount of vapor produced, Like the taste of the oils, is lacking. <br> <br> Don't get me wrong, when the device works it works well, The flavor and amount of vapor is good, but the coils are simply becoming too expensive, and so are the oils, Every time I change a coil i have to dump a full tank. The oils seem to be burning away much faster with the lower grade of coils (Judging from the number of complaints regarding the coils on HP, I don't think this is unique to me). I have purchased 4 bottles this month and am only left with 1. This is not on, and is actually more expensive than my previous habit.<br> <br> I am strongly considering trying another product from a different supplier. I don't foresee this being a fixable problem, and I will not buy another device. Especially with no guarantees (considering my current one is only 3 months old)