Last week I asked them to change my debit date and also opted to let them debit on the day, now I got an sms saying that I missed my premium of which it doesn't make sense cause there are funds in my account

Last week I asked them to change my debit date and also opted to let them debit on the day, now I got an sms saying that I missed my premium of which it doesn't make sense cause there are funds in my account. Then had a chat with Claudelle Scholtz (Wallenstein) on their whatsapp line and she's taking forever to reply with no sense of urgency and worst of all she's telling me that my policy is canceled and I'm so confused now. In fact I'd rather cancel it then cause clearly I'm not being assisted fairly