Dissatisfied customer

I am very disappointed in the service I’ve received. I’ve got a contract for the last 2 years with you guys and I was supposed to receive airtime every month for the last 2 years. I stopped receiving the airtime after a few months. I’ve contacted Vodacom numerous times and no one has assisted me. I’ve been to the stores as well and no one has been able to assist me. I am now paying for a contract that has not benefited me at all. Please contact me and inform me of how this problem will be addressed