Two Months Later and Still Waiting for Finecast Replacement Parts

It's hard to believe, but Games Workshop Customer Service still hasn't replaced the miscast parts from the Helcannon I bought back in April.  I wrote about this issue back in May with a followup about how the replacement parts I received were just as inferior and how I even tried writing a letter to Games Workshop. 

I called Games Workshop a few weeks ago to ask what was going on with my replacement parts and why hadn't I received them, and after about a thirty minute phone call having to explain why I wanted 100% intact parts with no miscasts (I shouldn't have had  to explain why I demand a quality product) I told the rep to send me what he could and a bottle of liquid green stuff.  It became clear at the time that Games Workshop couldn't supply a 100% miscast free Hellcannon.

Fast forward to today, it's now been over two weeks since I spoke to Games Workshop and still no parts.  I called Games Workshop to see what is going on. Found out that my parts still haven't shipped, because they don't know when they will get more in.  6th edition really backed them up, what with all the phone calls they received is what they are telling me.  

Maybe my barometer is way off, maybe it is okay to sell an inferior product and take over two months to make it right.  Am I the only one out there that doesn't find this acceptable?