user90163: I sent a little money to this address 19RTgakS1WZP172vZwn44HnJAKU8ZQcJxm and they said that this link was allready used by someone else. Now he is saying the bitcoins were sent to no one and that they're lost. Can I refund it somehow?

user90088: If they control the private keys to that address, they have the ability to refund you. Most merchants generate a new address for each transaction, and even if you pay to the wrong address, they can derive the respective private keys to transfer those funds back to you.
Is the address you paid to from the same merchant?

90163: <p>I sent a little money to this address 19RTgakS1WZP172vZwn44HnJAKU8ZQcJxm and they said that this link was allready used by someone else. Now he is saying the bitcoins were sent to no one and that they're lost. Can I refund it somehow?</p>
 90088: <p>If they control the private keys to that address, they have the ability to refund you. Most merchants generate a new address for each transaction, and even if you pay to the wrong address, they can derive the respective private keys to transfer those funds back to you.</p>

<p>Is the address you paid to from the same merchant?</p>
