1.put it down to experience and dont buy again from this seller, i know its shit but hey
2.if you feel you have been genuinly shafted then name and shame
3. contact trading standards for selling goods not as advertised, bit excessive but depends on how much £ you shelled out
id go with first one tbh as its sounds as tho your on to a loss either way, is it really worth the hassle but as i said depends on how much money involved