Last month i bought R99 airtime then i bought 5gb data for day and night but I could not use all my data because there was no network

Last month i bought R99 airtime then i bought 5gb data for day and night but I could not use all my data because there was no network.I called abd they told me that their tower is fault so I asked to be reimbursed but even now they are saying that they still waiting for the response because I laid a complain