This sometimes happens. Since reviews are often lost people resubmit if one hasn't appeared yet, but it may just be in the queue. That's a good argument for allowing people to see the status of their reviews.

Here's a list of cases of multiple reviews which appear to be for the same appointment, because the escort, reviewer, date and time all match. It's a bit old. I sent it to nbt a few weeks ago, but it seems he never did anything with it. I haven't checked for duplicates since then.

BEL1 on Brown Sugar
Bartman on Paola
BruceAlmighty on Sara
DDT on Patty Baby
Doom on Grabriely
ENGINEER on Sarah
First on Hot Roberta
Happychappy on Summer
Hawk on Mature Sara in Swords
IRISHMEET on Mendy
Licker Licence on Sara
Mike36 on Renata
Punter Paddy on Pamela Blonde
Spank Doctor on Lena
Stewie on Sexy Cindy
alan121 on Angela 21
anakin75 on Eve
b2dadizzle on Cherly
bobryan on Amanda
boogaloo5734 on Mel
buddie1007 on Kiara Bella
candyman on April Banks
castleknock11 on Priscilla
cramp on Veronica
donnie on Dara
galwaystud on Melissa
galwayxxx on Miss Samba
goldenballs6969 on Mariana
honda man on Chris
hustler11 on Jade
jameshugh on Anna
johnblack32 on Lauren
judasd on Barbara
kerry lad in town on Lynne
larkspur on Karol
legendaryshave on Raquel Pecatto
limkpunter on Hayka
livewire on Fiona(Irish)
lovesex09 on Linda
luster1979 on Emma
lustring on Vivien
mallow man on Nikol
mountdick on Miss Rio de Janeiro
mred on Amanda
number 1 on Alicia
pablo_23 on Sabrina Lovely
paul eustin on Savana
petercork on Ana
petercork on Cristal
pinky on Kika
pinky on Marcela
roadrunner on Miss Rio de Janeiro
sailorboy on Rachel
sander on Ferari
scankman on Linda
seca1 on Karla
sex_addict07 on Vanessa
tallboy on Sexy Alesia
texasdave on Gaby
thogaliano on Adrienne
toby69 on Lucy
tongueman on Lauren
xt13 on Sabrina
zooboy on Melissa