Disgusting MTN service

I did my phone upgrade over the phone with Dylan. Delivery never happened and I cancelled the upgrade. Upgrade cancellation is still not done and we in December already. Supervisors are always in a meeting. Emails are met with 'will contact you once cancellation is done'. Facebook page said 'we looking into it'. Call center agents tell me only Dylan can help me. Clearly this Dylan owns MTN. I'm disgusted with MTN and want nothing to do with you anymore. Can somebody plleeeeeze cancel my service with mtn!!!!!