No, it not our money anymore

Recently i had to make a travel claim, I waited a few weeks to check and it was ok’d, I confirmed my banking details and after a couple of weeks the insurance company said the details were incorrect.
I went to my bank with a copy of the details I had sent the insurance company, the bank checked the details and said it was spot on, so I re submitted the details very carefully to ensure they were accurate and legible.
A few weeks later I followed up and was told the details weren’t correct, so I gave them a bank account affiliated to their company,hey presto money straight in no problems.