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①引言

Iamwritingtoexpressmydissatisfactionabout…

Iwritetomakeacomplaintabout…

Iwouldliketodrawyourattentiontotheproblemthat…

IfeelsorrytotroubleyoubutIamafraidIhavetorequestyoutotakecorrectiveactionsconcerning…

Iregrettoinformyouitabsolutelydisappointedmethat…

②展开

Tobefrank,inthefirstfewweeks,Igotonwellwith…However,recently,Ihavediscoveredthat…

Thishasputustogreatinconvenience.Therefore,Iamreturning...andwouldgreatlyappreciateifyoucouldreplaceit.

Iamtotallyupsetwith…andcannottolerateanymore.

Tomygreatregret,theybecometroublemakersandaffectmylifeseriously.

Honestly,atthebeginning,Iwasquitesatisfiedwithyourservice.Tomygreatdisappointment,yesterdayIfoundthat…

③结尾

Tosolvethisproblem,someremedialactionsshouldbetakenbeforethingsgetworse.

Tosolvetheunpleasantmatter,Isuggestmakingthefollowingchanges.

Ishallbegratefulifyoucouldconsidermysituationandimproveitassoonaspossible.

Itrustyouwilltakemycomplaintsseriouslyandlookforwardtohearingfromyousoon.

Iunderstandyouwillgiveimmediateattentiontothismatterandreplyatyourearliestconvenience.