Poor customer service

I have a funeral cover with nedbabk and they haven't been debiting my premiums for the past 3months. They have my account and I have called to ask why they haven't been debiting my account. I have sent them my statement as proof that funds have been available in my account and they said they will debit. Instead of them debiting they sent me an sms advising my policy has been cancelled. I called again to try sort it out and instead they reinstated my policy with a waiting period of 3months for something that's an internal fix on their side.