Without getting a building inspection or putting it in the conditions there really is nothing you can. Some of these things were like that when you looked so its as it is. Sadly these people sound a little dodgy and like they didn't care at all....were they tenants or the previous owners?

We have just purchased a house but it's empty so nothing is hiding but are having a building inspection tomorrow and will be there to go through everything, new or old it has to be done as there are things we can't see and some people sadly are not trustworthy.

Sorry it has been like this for you. What was your agent like can you speak to them?