faulty Aero Battery

My wife bought me a new Aero for Christmas. At the time I was extremely excited as I have been using the same clearo for 2 years. Well, needless to say I am not so excited anymore.<br> The Aero is now 3 months old and the battery no longer works. The button that switches on the coil is broken, it does not switch off it's like the spring inside broke.<br> I then took it back to Twisp today and was told that without a slip I will have to buy a new one if i want to replace it.<br> The moral of this story; when getting a twisp as a present, be rude and ask the person to give you the slip as well! I would not recommend the Aero to anyone.