Nope!...my brother didn't bother calling them back to complain about them either,fearing someone would realize their mistake...

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Sometimes incompetence works in your favor!..
A similar incident happened to e at Autozone not long ago--
I go in looking for new glow plugs for my 6.2 diesel --I had bought some about 3 years ago,to have as spares--when I went to use them,one wasn't an AC Delco one,it was a "Wells" brand,it was the same as far as fit,etc,but I didn't want to mix different makes ,as I had an Autolite one FAIL when I put one in when I was in a bind ,from a parts engine I had-half of it broke off and went for a ride in the cylinder!..(engine still ticks now till it warms up good,dont know just howmuch damage it did)--I have read if you dont keep all 8 glow plugs "matched",one may get hotter than the rest due to different resistances,and I think thats what happened--
Anyway,I ask the guy for 3 new glow plugs,and after he gets them,I ask if I could swap the "Wells" one for an AC--he says "probably,but I dont have that authority--I'll have to refer you to the manager..we talk a few minutes while I'm waiting for the manager to finish with another customer--then the guy waiting on me says "Oh,gee,its 7 o clock--I'm outta here,my shift is over!"....
I wait several minutes while the manager continues to BS with his "customer",who in fact I think was just a friend hanging around..finally he looks my way,and says "Is anyone helping you"??--I said "there WAS,but he left--he asked you to speak with me,remember?"--
"Oh Yeah"!--I'm sorry,whats the problem"??--I explained I wanted to swap one brand of glow plug for another...He says "Sure!--no problem at all--here you go--and he hands me one..the other 3 new ones I had yet to pay for,were still sitting on the counter next to them...
I pull out my wallet,and he says "Oh,no charge--your all set!--have a nice night!...so I gather up the 4 glow plugs,and wish him a good night too,and off I went!...
I think he thought I had paid the other counter guy for them...

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I know--I'm a theif!...but after all the times I got the WRONG parts there or ones that were JUNK,and had to drive back there,I felt it was payback...