Discovery Health *****s money not due to them via Debit order system

Discovery Health this month decided that they would just reach into my bank account and remove all my money by double debiting my account during a pandemic .When I had been paid up .Admittedly my previous months debit order did not go through and I paid it manually as its the middle of pandemic and I am not earning an income .I did receive notification by sms and email that payment was received well over a week prior . Discovery Health refuses to assist me on previous occasions to postpone or delay debit orders and with any relief during the lockdown due pandemic ,refuses to allow downgrades ,wants to cancel my cover and refuses to cancel or place on hold their debit orders .So now they refuse to refund me until half way through the month and bank wont refund me until discovery lets them and Discovery wont answer calls or emails from me to get this notice sent to my bank manager ....