1.Please post the tx of the transaction.
2.If 3 confirmations are reflected on the block explorers ,that certainly means that transaction is confirmed.
3.Do you mean the balance is not reflected in your account yet ? In that case,give additional info about the wallet you're using.
Blockchain.info shouldn't have problems,you sure the money was sent to the correct address ? Please post that details as well along with the tx.
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I sent bitcoin to 3 different addresses and there has been
4 confirmations since the first transactions yet all of them are unconfirmed