I followed the whole PQ episode. The thing that struck me was that Savini made him eat hundreds of dollars (at least) in shipping costs for something that was their problem.
That alone said a lot about the kind of company they are.
If I were Dr Jkel, I would be demanding my money back immediately and not fooling around with them. The longer you let them drag this out, the more it will cost you in the end.
Hopefully you have written proof that they agreed to a refund after the first fix attempt. If so, hold them to it immediately.