transactions – There are twice as many coins on the balance as it should be, but when sending it becomes zero

I sent myself coins from one wallet to another. After the coins came, I made a copy and deleted the wallet from my computer. After a while, I re-restored the wallet, the balance was three times larger, then he recalculated and the balance became twice as large. When trying to send a zero balance. I took out the private keys and inserted them into a new wallet, but nothing worked out. Please help me what’s going on.