incompete delivery months after payment

We ordered a product in January from Matlosane Canvas. We paid 80% deposit, received a partial order and since then nothing.<br> <br> We emailed and phoned, getting promises and stories, but no delivery.<br> <br> When we phoned and demanded a refund of the money paid, the attitude was \whatever".<br> <br> When we threatened with legal action the response was:\"" we don't care"