I bought my HH .357 atty and received it on Oct. 27th and used it just like the instructions stated. It lasted me 2 days on my 3.7 volt mod. The atty was a 1.5 ohm. It just quit working, no pop or anything to warn me, it simply just quit firing. I mailed it back with a short note on Oct. 31st and have not yet heard or received anything. I e-mailed AV as well as sent a private message to Cisco. Still haven't heard anything. I love Cisco atties, they are the absolute best as far as I'm concerned. I've been
vaping close to 3 years now and believe me when I say I've tried all of them. I don't know what else to do now. I guess I've just out and will have to pay for another one if I want it. I'm not the kind to quit using Cisco atties because I would only be hurting myself. It really just seems like I could get at least a message telling me why it can't be or why they won't replace it. I agree with the majority here by saying that it is an excellent atty. I even ordered a standard 1.5 ohm Cisco AFTER I sent the .357 back. And as always I got excellent service. What do I need to do that I haven't already?