Vodacom wants you to pay for entire month while your contract is expiring on the 3rd of that month.

My vodacom 10GB data contract is expiring on the 3 of December 2026. Today, I phoned them to give them a 30 day notice that I want to cancel the contract. Vodacom tells me that If I cancel the contract I will still have to pay for the month even if my contract expires on the 3rd of December 2026. So they forcing me to pay for the entire month while my contract is expiring on the 3rd . This is ****************, why must I pay for an entire month if my contract expires on the 3rd of the month. Vodacom is basically ******** you for a extra month of data that you must pay.