Item was supposed to be sent to address 'A'. Was accepted at address 'B'. This billboard-size neon-glowing discrepancy takes so little time/effort to spot that

Item was supposed to be sent to address 'A'. Was accepted at address 'B'. This billboard-size neon-glowing discrepancy takes so little time/effort to spot that I'm incredulous that multiple customer "service" people in mentioned in the blog post didn't see it. It has to be impossible to miss this bloody obvious gap. Just how?