Not happy with woolworths online service

on 27 November 2020, I placed an order (o***),which got delivered on 04 Dec 2020 with 1 item missing, instead of 2pack trousers only one was delivered. I sent an email and called on the 5th of Dec, The guy I spoke to on the phone said they were going to attend to my concern,but I shouldn't use the one set that I received. I called again on 22 Dec with no answer and sent an email again,about 2days later Woolworths called me apologising for not assisting me, even today 01/02/2021 I haven't gotten any help or feedback instead I keep loosing airtime because I keep on calling them with no answer. My baby is growing I don't think I'll be needing these shorts any more, I'm really dissappointed