NO IDEA HOW TO PAY OUT CLIENT FUNDS!!!!

I don't even want to give this bank one star!!!! I opened a savings account for my son. First they went and gave his VERY ABSENT father signing rights with me and now that his account is maturing I cannot seem to get an answer as to where I must send the forms to withdraw his funds so that I can move it to another bank!!! I need to be able to handle my son's account without having to deal with a father who does not seem interested in the child's well being and who also lives hundreds of kilometers away!!!! When I try and phone the branch where the child's account was opened, the phones do not get answered. I would like to put my son's money somewhere where he will be receiving the best interest rate as well as the best customer service!! Absa IS NOT THAT BANK!! WHY DO I HAVE TO STRUGGLE SO TO DO WHAT I NEED TO DO AS A PARENT FOR MY CHILD???????