"Artists Beware"

Suit maker; AJ Gunn / AJ Aug / DarkieSharkie / Glitched Aug / Zaru666
Known webpages: 

• http://www.furaffinity.net/user/zaru666/
• http://forum.ukfur.org/user/10104-aj-aug/ 
• http://aj-aug.blogspot.co.uk/ 
• http://glitched-aug.deviantart.com/

TLDR: A £90 commission for a tail - high price due to specialised material requested for the tail itself (cost £40). Material was only half used, and the half that was used was subsequently ruined as part of the "repairs" process.
Artist agreed to a full refund but has subsequently has refused to refund any money, then changed mind and offered to refund only 1/3rd of the money.
I have recieved no usable goods to this day, and those unusable have been returned to the maker for repairs.

( Details in the cut )

( Previous updates )

UPDATE 3: 10/06/2012

Continuing update - Despite the artist not actually telling me about this, there was a transfer of £50 on Tuesday. This is still not what was agreed upon as per 24th April, and as such, I am uncertain as to whether to continue with this. I do know however, that it was not any of the options provided or discussed.

Any thoughts or opinions?
And I do not yet feel this is fully resolved...