how to professionally say The increase is primarily attributed to a decrease in the cost of sales by R232m due to lower post-paid & Somahashi sales and higher rebates than expected; lower payment to other operators (R91m) mainly due to lower roaming traffic than anticipated; lower OPEX (R51m), mainly due to a decrease in maintenance and support contract costs, lower employee expenses mainly due to higher leave pay credit; lower maintenance and support contract costs and sub-contractors and lower property management expenses, partly offset by higher IFRS 9 receivables impairment due to higher write-offs as well as higher operating leases due to higher building leases. The higher EBITDA is offset by lower revenue of R89m attributed to lower CPE sales mainly due to lower post-paid and Somahashi sales and the decrease in other income by R39m due to the anticipated sale of the debtors' book not taking place