Bought a twisp edge and not satisfied.

I am a customer of twisp for the past 2 years and I was very happy with the previous CLEARO device. Hence I was inclined to purchase the New and latest device which is the Twisp edge. I have experienced many problems with this device. Firstly, I had a problem with my first battery(900mah), as it didn't always work when I pressed it 5 times to switch it on or off. Sometimes I pressed it twice and it came on. So I eventually got the battery replaced. The newer battery still does the same thing but not as frequent. Secondly I purchased the Pina Collada Flavour to smoke in my new twisp. I mainly smoked this flavour on 3volts as the twisp assistant advised me. Within a week after my purchase I have a problem with the coil. It has definitely burnt out within 1 week of smoking! I am not impressed! Hence I took it to the twisp store, the guy tells me it is the flavour that tastes slightly burnt. I thought to myself why would twisp sell a flavour that tastes burnt? I am not impressed at all with the new device and I would like someone to contact me and assist me in a dignified manner as I feel a person telling me that my flavour has a burnt taste should have told me that before I bought i