Xonicwaves over due account

bradley Hitchin from Xonicwave 5 Bryan close bryanston purchased a steel stationery cupboard from the office furniture warehouse 30 of JUNE delivered to the above address,the payment was COD i have sent invoice and been communicating via Wassap he keeps telling me he will pay,we are now 2 months down the road,do the right thing as not paying account is pretty dam low mail address for him is xonicwavesa@gmail.com and wassap number is 0664405454