Discovery just cancels gap cover by themselves

I started on health gap cover in February 2023. I now see debit order is not going off . I did not change my medical aid with you except go to private capacity .My banking details has not changed, but no money has been taken and now my gao cover cancelled without any instruction from me. You just decided to stop cover. This is really stupid from discovery . I have a couple of products of yours and if this is the case i may cancel all of them.