OK, heres the situation,
Back in Mid January, I decided I wanted to order a Sigma 1.4x tc for my 70-200f2.8 HSM lens.
I sent an email to enquiring whether the unit will be usable for the lens on a Sony mount. They replied and said yes. I emailed back to double check to ensure that the TC would be compatible for the HSM version and I got a semi rude email back advising "That was what you were told".
Since there was no stock avialable in Australia, I ordered the unit.
And guess what (didn't see this coming, did you...) the thing doesn't work. I researched and it appears that for the correct unit, I needed one to start with a Serial number of 5. The one that I was sent started with a 4.
I have emailed Sigma in the USA, who have replied advising me that were aware and should be aware.
I have rang them, I have emailed them, I have chatted with them and they keep telling me they were not aware. They will take the exchange, but now I am out of pocket $90 in shipping fees and guess what, I still don't have the right unit.
As you can guess, I am seriously pissed off. At this stage, this will be my last dealings with & Sigma. I am also pissed as I cannot get the item in Australia (I tried first, but CRK don't have the right one in stock either. I tried here first as it was about the same damn price)
OK, rant over