Please note, Ken went out of his way not to say anything...
No matter what I attributed to them, me telling you what the Helpline said is worthless to you. They need to say it to you for you to responsibly incorporate it into your decision making.
If this is the final wording, it's a place to start.
Assuming you have the customer's beneficial ownership information, thereafter include a piece of paper with the maturity notice asking them to let you know if there has been a change in beneficial ownership. Or, more tightly focused, asking them to sign and send something back to you saying there are no changes or providing you with an updated copy. (If it's a legal entity customer's account you are not required to send a maturity notice, but I'm guessing your system spits them out anyway.)
Selling only single maturity time deposits to legal entity customers also works... The automatically renewable time deposits would have to be significant to my ALM for me to do anything dramatic to keep them.