public function sendToWebsite($url, array $params)
    {
        // Sending request
        $client  = $this->getClient();
        $response = $client->request('POST', $url, [
            'query' => http_build_query($params, '', '&')
        ]);

        // Getting response body
        $responseString = $response->getBody()->getContents();
        $responseString = trim($responseString);

        return $responseString;
    }