Old thread, but I'll add that I'm also having a miserable time with Sony support (or lack thereof). I'm in Canada, and I bought an SEL35F14Z that was clearly soft. The retailer had a no refund policy and wouldn't let me exchange it (as I had already exchanged the first 35/1.4 I bought, which was asymmetrical). I contacted Sony, and they had me take it in to an outsourced Canadian service company. They tested it and concluded that the lens was, indeed, soft. They're not equipped to fix lenses, so they sent it to Sony USA, or perhaps a Sony U.S. outsourced service company (maybe Precision, for all I know).
It's been about a month and a half since I dropped off the lens and no one can give me an ETA. The Canadian service company told me that they don't really have any idea when it'll come back, and that it might well be another month or more. I called up Sony USA to ask if they could help, they said they would look into it and get back to me; a week passed, and they didn't; I called back, they said they would escalate the matter and follow up; another couple of days have passed, and no one's followed up.
I think it's completely ridiculous that I spent almost $2k on a lens that was defective out of the box--and here I am all these weeks later with no lens and $2k poorer. Not to mention the fact that I really would have liked to be taking photos with a 35/1.4 throughout that time.