Has anyone taken these to the UK small claims court yet?

I bought a 5MHs (now 50MHs) in the second round of orders at end of March so I'm still within the 5 month refund window, however they are only offering a refund 50% - £70.

Although these are obviously trying to pull a fast one here, I'm trying to identify the exact terms they have broken. The only thing I have found that I think would be arguable in a court, is in the original terms they said miners would ship 8 - 10 weeks after the request for final payment. This request happened on May 22nd however they haven't shipped yet.

The other possible argument is around the required power for the miner. The original 5MHs was going to draw <= 70W looking here http://web.archive.org/web/20140212231631/https://alpha-t.net/product/scrypt-asic-miner. However, with the upgrade to now be 50MHs the power requirements have shot up to <= 375W which I think is another possible point to argue for a full refund on?

I paid by Bank Transfer as this was the only option in the March batch of sales, so no CC claim for me!