I generated a Bitcoin address from a site and made payment to that address from my PM through an exchange site. The problem is the bitcoin wallet had "h" at the end of it, but I missed it when typing the wallet for payment. The address I intended on sending the payment to has not received the payment due to this error. Have I lost the bitcoin that was sent? I have tried communicating with the exchange site but no luck and the site I was hoping to send payment to has not responded to my emails either.