Have you tried saying, in writing, that unless contracts are exchanged by ....(date).... you will withdraw your offer. Give them something like 14 days and I'll bet that everything will be sorted.
We'd done all the standard stuff, had an interesting last week though:
The estate agent Lady who's now handling our case (or at least the one we speak with), was on holiday for most of last last week - only returning on friday.
Having issued the nuclear option of "we're buying it as advertised or not at all" the previous friday, it seems the vendors came back with a counter-offer whilst our designated estate agent was away. Apparently the whole office was aware of this fact, yet nobody thought to tell us!
The counter off was more complexity again, so we issued a bit of a "sod off" type response.
This all happened early on on friday, and we were pretty much of the opinion that it would fall through at that stage. To our amazement, the estate agent lady pulled it back from the brink, and we were all agree by friday evening.
The original estate agent idiot was also on holiday during this time - which was great -but he returned to work this week.... and boy didn't we know about it!
All of a sudden, the quite helpful estate agent lady started to sound a lot like him again! Anyway, by 4:40pm on monday, 9 weeks from offer accepted (to the hour!!), we finally had a memorandum of sale from them that we were all happy with.
Our solicitors have submitted the searches, and sent enquiries based on the little bit of paperwork they've recieved. The vendors solicitors are apparently still waiting on the title deeds!!! End of this week apparently!
We've told them that we are to exchange no later than June 28th..... lets see!
We're also engaging in a bit of a "wall of noise" operation with the original estate agent idiot... probably won't yield much, but should reduce his capacity for meddling.