Just had this by email “With deep regret we must announce that MustardBet has ceased taking bets.
All customer balances will be returned to the card we hold on file within 72 hours. Please note that these payments can take up to 5 working days to be processed by the receiving bank.
If we are unable to return balances, we shall contact customers by e-mail and telephone within the next 28 days to find alternative means.”