I am trying to open an account in DBS bank. It can only be done through their mobile app. On first try I input my email, phone number etc but before submitting, app crashed. Since then it tells me I already have an account, please sign in. But as I don't remember setting password, clicking forgot password and inputting email, phone number tells me such details do not exist in system. Even customer support has no answer to this. What can I do here?