Amazon woes

Unfreakinbelievable. First I order some audio cables from Amazon (UnitedIntegral) and they're the wrong item. Then they resend me the same wrong item after I specifically explain to them what the correct item is (which they then claim they don't have and that it was a product listing error). So I buy the correct cables from Cmple (also through Amazon) instead. 6 months pass and I decide to get a new battery for a laptop through Amazon (ACCDEPOT) but here the darn battery doesn't have a notch/indentation in it to fit the battery compartment! Arrrgggghh! Seriously...really?? Even the damn picture shows the freakin' notch/indentation!