diff --git a/src/Message/RefundsRequest.php b/src/Message/RefundsRequest.php
index e76e478..1410195 100644
--- a/src/Message/RefundsRequest.php
+++ b/src/Message/RefundsRequest.php
@@ -72,7 +72,7 @@ public function getData(): array
      */
     public function sendData($data): ResponseInterface
     {
-        $httpResponse = $this->sendRequest('GET', 'transaction/refund', $data);
+        $httpResponse = $this->sendRequest('POST', 'transaction/refund', $data);
 
         $responseData = json_decode($httpResponse->getBody()->getContents(), true);