Ones I see I said quite simply 'we're moving over to direct debit, can I confirm your email and I'll get it set up please'
All the customers that used to PayPal I sent an email saying 'thanks for your payment, from next month we will be collecting payment via gocardles. Any problems, please come back to me.'
A few suggested cancelling but I said (to them) 'I'm offering it, not enforcing it.'
Never gonna get everyone on it (commercials all said no) but if I can get £2k dumped in my account on the first of every month I'd be pleased.
Can't recommend it enough.