Question Author
Yes it was quick, as there was only money involved. The death was Jan 2017, the letter May 2017. Executor wrote back explaining that all was done and dusted, and asking for details of how the pension was paid and for what periods (it would be a big coincidence for it to have been exactly a month overpayment). No reply, till Feb this year another letter, from a different person, claiming they had had no reply to their previous request. Exec. wrote back, including a copy of his previous reply. Three weeks later we await their response.