Most institutions do not charge for an RRSP withdrawel. Are you sure it wasn't the taxes withheld?
Banks are required by CRA to withhold a minimum of 10% taxes. (more if you withdraw over $10,000)
You would receive a T4RSP with all this information on it. The taxes withheld are a credit to your total tax payable. By entering the T4RSP, you will have credit for the taxes withheld.