Steers ****py service

Steers kloof is really giving me issues i placed an order online firstly the order went through an i used a daddy deals voucher valid for R50 so the wacky wednesday is R49,90 which meant that I wont be charged however when my friend goes in to collect for us she was told that she needed to pay , however i already used voucher on that meal. Than when i asked steers online for assistance they insisted i talk to the store so basically i lost the voucher for nothing.