Looked through foxybingo terms and conditions to find an email address for cassava, it was the same address that emailed me about returning money spend while being excluded. I started a new email rather than replying to the one I was sent and I've just had a reply saying:
Thank you for your email. We can confirm that it is in relation to deposits made to a number of bingo accounts including Moon Bingo, Sugar Bingo, and Tuck Shop Bingo to name a few.
Kindly be advised, we are returning your deposits, as we have found that you self-excluded with our company and therefore your accounts should not have been permitted.
We hope this clarifies the situation for you.