Poor Customer Care

Since I took the contract with this company Africa mobile, they don't respond to any of my communications Email, WhatsApp and their number is always busy or no answer, On the 26.01.2024 they debited my account R509.00 and after that they lock my devise saying due to non-payment , I would like to terminate their contract as I can't even use the devise, They ripping people off their money for poor customer services.