Vodacom is the worst

Why does Vodacom make it so difficult and painful to close a contract after it has run it's course. You have to endure the most painful of conversations to give notice and to be told about every other product you don't care for, and then after that, the contract is not cancelled even with the notice. And then after I rejected the debit order, I get threatening calls from HP attorneys, who don't even check that there is a legitimate claim from Vodacom. Can someone please just close this contract now and make this go away. I followed your contractual process, not adhere to your side.