Thank you odolvlobo for your info and reply. Yes blockchain is the hot wallet that I am currently using.So I can expect them to return the balance to my bitcoin address? Thanks again.
If you look at the transactions involving 1ERj1taMSKngY9zngqkatxRXHFrJdSUsj1 (https://blockchain.info/address/1ERj1taMSKngY9zngqkatxRXHFrJdSUsj1) you will see that every time bitcoins are sent from the address, the change is returned to the same address. That is typical for a blockchain.info wallet, but it is not how most other wallets work.