I wonder if anyone can give any advice here 
Late last year I got a letter from Tax Credits to say that I had been paid an overpayment in 2008 (actually 2007 but for the year 2007/08). I appealed it straight away, was sent a form and filled it in saying that why etc) Heard nothing, until I just got a call asking for money 
Now, I appealed as I had a renewal form in the July and I was due to move in with my then Partner in the September, so I rang and explained. I was told that I could re-apply for two months and then cancel the credits. I said to the woman on the phone, I dont really see any point in reapplying so Ill leave it. End of story so I thought. Now they say I was overpaid as I didnt re-apply?
So five/six years later they can just call up and tell me even if Ive appealed it can take ages and they would like money or theyll take legal action? Im afraid Ive just given the poor woman a bit of a polite but firm mouthfull 
The thing is, there is no proof on my side (like what??) and I presume courts will automatically side with HMRevenue, and I guess either way I`ll end up paying some sort of legal costs. They have me over a barrel dont they
?