Bitcoins disappeared from Blockchain.info account

[Jarx]

I'm using them for a web-service. Last time I check there was 0.8 btc in my account, a few transactions. But today I opened it and empty wallet without transactions, with this warning:

"Number of addresses must be between 1 and 1000"

How can I get my balance back? When I make RPC calls, it says still 0 balance. But I can say transactions doing RPC.

Edit: Now it says: "-0.8001 BTC $ -206.46" in top of account after doing sendToAdress call. Anyway, good bye bc.i.