Oh dear
On reading your post, full of anticipation, I dashed to the east wing, ascended the servant's staircase to the technology center and repaired to the modern technology suite. Hands trembling, I went to the menu structure of my aged Nokia, but alas, the nearest offering was for a longer string...along with a reminder to keep it taught.
One supposes that One will have to invest in a new phone. Re-entering the numbers won't be too bad, as four out of my seven friends won't take my calls anyway.