I’ve been warned to get in touch with our providers well in advance as these things are really hard to un-do. It’s not belligerence, per se, it’s strict rules put in place to avoid tax evasion.
If, you’re going to be using them again in the near future, I’d let them sit on it – if though, given the time of year your Kid is now started school, let the Nursery (as they’re the end of the chain) follow their procedure and let it unwind itself.
I feel your pain, it took me MONTHS to start ours, the only parent of small kids in a small firm, I basically hard to set up a scheme for myself, ours starts school full-time in Sept 18 (counting down the hours), we run a small credit on our account each month, summer hols should eat it up, but I’m planning to cancel it in August, pay the tax on the last payment rather than risk it.