I have a Passthrough that lasted 3 solid months, when I say solid, I mean solid. LOL That thing hardly ever left my hands and the passthrough itself is still working now, because I taped the cord to the side, it had come loose on the inside. It's back in business. I probably used it as much as a normal person would in a year. I'm a vaping fool. PTs that last 3 months are a good deal in my book, that's about 5 or 6 dollars a month for one, I don't know how long they're supposed to last. I consider these products a sort of beta thing, ecigs are so new to the market and improvements are being made constantly with V4L, they're a bit experimental and luckily V4L realizes the good and the bad about these products and takes care of their customers accordingly.
I've ordered a lot of batteries from V4L and I had 2 manuals that the buttons were not right, they replaced both of them, no questions asked. I didn't have to return the 2 that were messed up, either.
I didn't have to ask for a new passthrough because they threw one in my order as a freebie and it was replaced without even mentioning it. (of course this was a weird coincidence that they sent it in the same color of the one I was having trouble with and they had no idea I was even having trouble with the other one).
I can say without a doubt that if it seems like you are being ignored with this company, you are not, they will take care of any problems that you have. This is why I stick with them, I can order and not have to worry about anything. That is not to say that they can't miss an email along the way, so contact again, if you didn't get a response.
I've spent a ton of money with them and everything has been great, except for those batteries and the way they took care of it, it was like it never happened.