I am perplexed as to why they will not honor their warranty as well and specifically their mistake...
I'm sorry you're having a rough go at it, but you really shouldn't be so surprised.
Serious Problems w/ the Tascam DR-680 (and their customer service)Here is the saga of when the DR-680 Acidjack and I bought brand new from B&H for $900 shit the bed no more than a month after we bought it. Long-story short, Tascam is a big corporation that specializes in selling disposable products and has shit customer service. They could care less that your brand new unit was a lemon and are probably only going to replace it with a refurbished unit.
In our case, we had to raise a complete shit-storm until we finally got in touch with the head of the Tascam USA's repair division. He was a nice guy, certainly a different experience than the standard customer service reps we had been dealing with, but even then it was difficult for him to grasp why we were upset that we're getting a new replacement for a unit that was effectively DOA.
Moreover, the first replacement he sent, which he claimed was a 'brand new unit,' was DOA. The replacement unit had to be returned which then required additional hassling to make Tascam to foot the bill to return the 2nd DOA unit via insured UPS shipping. No fucking way were we going to foot the bill twice to send back our DOA units.
The third unit we got claimed to have been personally tested and broken in by the head of the repair division, but in the end that unit was still no better than a typical 680 which was easily prone to overheating and didn't lock perfectly to a number of external A/Ds.
Do not expect this company to care about your $200 purchase.