Before you make ANY payment think twice about who you're sending money to, and if you're buying items online always use a trusted way to pay like your debit or credit card, PayPal, Google or Amazon.
Watch out when buying anything from social media or online market places - check out the seller's reviews. And, if it sounds 'too good to be true', it probably is.
If you've got doubts about who you are handling over your money to - don't!