MTN CUSTOMER SERVICE - NO REFUND -NO ASSISTANCE

Line cancelled in May 2023 - Till this day I am being billed for it and need to pay it, as you will softlock my other two lines as well. I have sent numerous complaints and logged numerous tickets with customer care. I phone once a week, every time I get told the same story. No refund till this day!!! This is the worst service provider with the ****test customer service, I have ever seen. I have spoken to Customer Care, Retentions, Collections, Billing. No one can assist me. I need a manager to phone me. ASAP! I have reference numbers and proof of communication and phone calls made. I have a cancellation reference as well. I escalated a ticket because of the incorrect date. Till this day, no feedback!! It is unbelievable!!!!!!!