Samsung battery charger redemption

Worst customer company. Signed up for A70 samsung phone; redeemed free battery charger online. Courier company phoned twice, I was at lectures and did not answer. Courier company never sent me any messages, no correspondence from Samsung electronics. Samsung says I forfeited gift as they have no control over courier company. I understand it's in the terms and conditions but surely a reputable company like Samsung should not evade customer responsibility and try to satisfy their customers that keep them in business. Apologies from their personnel mean nothing, they need to understand the damage that they are doing to their brand. Not buying Samsung again!