It has happened to me on William Hill alough they did pay the withdrawal ☺️ And sai it was unusual for a player to deposit and not play 1st, before withdrawing….
My way of playing is that I deposit 1 night and when finished I usually always withdraw.. Then repeat, usually on the same day… I never leave money in. Told them this too & they seemed to understand.. Checked my acc and got my withdrawal within a hour.