Advice for UC

I found a message on my journal asking me for bank statements worth of 6 months. This followed a report of change of circumstances I made for getting £3000 after selling a vehicle, almost a month ago. As we speak, today I got this message, the money have been spent mostly to furniture (child bedroom totally refurbished) and 2 new appliances we needed, a dehydrator and water filter, both of which we had and broke down sometime ago. I now have £1500.

So my saving always have been below the 6k mark, even when I got the money it was aprox £4000 and i declared that amount, alongside how I got the 3k.

I dont care about the bank statements etc, I know all is ok, but did I do something wrong? Can this turn to be a headache of some sort?

And, I was to tell them what has been left next week as we are expecting something else that was on back order and will pay the balance. 

So I am a bit confused when to tell them the money were spent, now, next week all has been received? I have invoices with dates for everything and its all from major retailers.