When you joined Jericho Writers, you would have opted either for a monthly membership, or an annual one. Payment for your first month/year would have come out of your bank account immediately.
After that, subsequent payments are paid via Direct Debit at the same time each month/year. For example, if you bought your monthly membership on 1 January, your direct debit would come out again on 1 February – and so on. If you bought an annual subscription on 21 May 2021, then your next direct debit would come out on 21 May 2022 – and so on.