cancell of contract

Good morning, Vodacom really where to I start. One cancel a upgrade and one want to cancel existing contract with Vodacom and it a problem. one sent the necessary paperwork to cancel the existing contract and still no reply for vodacom. one just need the exciting contract cancel and new contract cancell immediate. they calls are record they need to see when i called as i call on the 265/01/2023 to cancel the new deal with vodacom and sent e-mail to cancel exciting contract