LBC merely enables each buyer to choose a seller. They are not an exchange. In future:

1. Choose a seller with over 400 customers and a spotless record who offers a no-questions-asked money-back guarantee. For example: https://localbitcoins.com/accounts/profile/coqui33/?ch=4ja

2. If you are dissatisfied with the seller you chose, write a negative feedback to warn off others.