Rudest Sales consultant

I recently experienced the most rudest and unprofessional guy by the name of Dione from Elixi Medical health insurance, he was in a hurry to make a sale that he did not explain the terms and conditions so upon hearing about their waiting period I told him I won’t be going ahead with the account as I won’t wait for that long. Dione hanged up on me and still went ahead and opened the active account whereas I specified that I won’t be taking it, now they are calling me constantly telling me to go through the cancellation department for something that I did not give a go ahead for in the first place. I don’t know if it’s the company or the Dione guy I spoke to but I would not recommend.