Refusal to cancel my contract

I have been requesting cancelation of my contract with Vodacom for past 4 days. I have put back & forth in different & still my cancelation request has not been processed. On the 11/03/2023 I spoke with agent who first denied & later did confirm my contract ends on the 30/04/2023. Today I call the cancelation department & the lady by the name of Nicoleen tells me something different. She says my contract ends in May, I should wait till April to cancel my contract. I tell her the Vodacom app say otherwise and tells me unashamedly so that the app is wrong. This is using under hand tactics not to cancel our when the expire. DON'T TAKE ANY CONTRACTS WITH VODACOM.