OMG......as we say on mumsnet.....@kitchy speaks the truth, this is miles worse than the other thread that we all commented on. However, the issue is the same. It is either over promised and under delivered, or higher expectation and lesser / no ability.
In either case the op is left with a shite job. Both parties are at some fault, the op will just have to "suck it up". Sack the "tradesman" and use the other info on here to find a better one, prepare to raid the xmas money. On the upside, when you find a good spread, he will get it sorted for you and life will be better. Cheer up! All is not lost.