Poor service

On 9 February i call standard bank to confirm how i go about changing my details for my debit orders. i'm advised, provided email addresses to send the request to which is done. Today 26 February i notice there are still debit orders running off the old bank account which will of co**** cause these accounts to become delinquent. I cannot understand how standard bank cannot get their service right after following a process i got from them. The reason i change my details is exactly due to this lack of service and there were several incidents which lead to me moving to another bank. The biggest issue i have with them and i have asked this question to them and it was avoided, what penalty do they pay the account holders for their errors as they are quick to penalize if the error is on the customers end. I'm done with you guys, my bond is moving next away from you.