Accounts Department seems to have gone mute?

We have been a member of Flexi Club for more than 20 years and have had reasonable service from them, until recently. Following two bookings made on 02 October 2025 that required cancellation of an earlier booking (of 13 September 2025) at the same resort (La Rochelle), there suddenly appeared massive, but incorrect, credits on both our levy and points accounts, due to three more "cancellation". Our problem is that we cannot make any contact with the accounts department, in spite of emails, phone calls and a request on the web site (via Contact Us) to phone us back. We do not understand how Flexi Club balance their books with errors such as these.