Tooth whitening was a scam? or what?

so I mentioned a few weeks ago I was going to try this teeth whitening place . so I went there about a week ago and paid $ 150 for an hour session . where they out they stuff in a mold and it goes around your teeth . and its suppose to clean them or something like that . but it didn't really do that much and teeth not anywhere near white so I went back to the place and they said it be $ 80 for another session if I still had my plastic mold or $ 150 if not . it all sounds like a scam to me and I don't think I should give them anymore money .

anyone else had experiences with this or how did you get your teeth white ?
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its suppose to say teeth whitening, where is the edit button here ?
Tooth whitening was a scam? or what?
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