Miss leading online

on 11/12/2017 i purchased online good of R1600, on the advert it states free delivery when you spend more than R500, when i had to pay for my goods i was charged delivery fee, i took the R45 option as it takes 1-3 days it their express delivery. i called in to the service call center and spoke to Regaard or someone very rude he was do unhelpful that i got so angry and i actually swore at him.he slammed the phone in my face. i called back and the gentlemen who assist me calmed me down a bit but i am still frustrated. i was told i should have used the coupon to receive the free delivery and my R45 is non refundable and what is worse i am being told i will my order would only arrive by Friday or Monday the latest i mean i am willing to pay the R45 delivery fee just to have my order here y today or tomorrow but i was told they cannot priortise my order. i release it is festive season but surly when you pay for a service specially a delivery fee your order should have prioritized. very poor customer service and if the items don't fit ill have wait until probably after xmas to exchange it no man