Bad service

I was a member of another medical aid. I took a medical aid with discovery which my last premium was January 2022 I took the medical aid via Hippo. I was asked when do I want the 1st installment, I told them I have to consultant my children 1st which I did and told them that the premium will be in March. When I called for enquiry I was told that I am on a waiting period for 3 months because I have skipped February. February has 28 days why would I be on a waiting period today another consultant told me a different story regarding waiting period. She said I am on a waiting period because of a pre existing disease which when I took medical I was told for only pre existing diseases I will be on a waiting period. I am not happy that people are taking advantage. I want the waiting period to be cancelled or not get my refund