Poor service from Edcon on an error they made

My mother opened a Jet account a few years ago. to my surprise when i went to pay her account i found that they had misspelt her name on the account. I then called the helpline and I then sent an email to ********** and guess what i have not received a responce. My mother is elderly and does not have time to be running around to sort out a mistake that was made on edcons side!! The least they could do is respond to the mails I have sent as its their error