Someone created an account using my phone number, when I reported the issue to Snapchat this is the reply I've got from them:"We are truly grateful you took the time to flag something in the app. It's caring Snapchatters like you who help us protect the Snapchat community.We wanted to let you know that we looked into your report and have found that the matter concerned does not violate our Community Guidelines.Your voice matters and we're here for you every step of the way. Please take a moment to review our Community Guidelines. For more info, or if you wish to pursue this further, please visit our Safety Hub.Thanks for your report,Team Snapchat"So I looks like it's OK for Snapchat for someone to pretend to be you.