Back in June I rented a property and paid a years rent in advance, thought it'd be easier and less hassle. Anyway, since moving in I've had various problems, culminating with a pretty serious blockage in waste pipe, each time I report a problem it takes at least a week for the letting agent/landlord to attempt to deal with, for instance the blocked pipe, took nearly 2 weeks to get sorted, and only got something done when I threatened to take legal action. I've heard nearly every excuse possible why it takes so long, I'm starting to feel the service I recieve is basically crap, and was wondering if there is any reason why I cant demand my money back and I'll pay monthly. Can anyone offer any words of wisdom?

Thanks.