Failure to communicate with PHP webservice

I'm trying to access a PHP webservice through an ASP.NET application

ccbusca.pesqwebservice client = new ccbusca.pesqwebservice();
client.Url = "http://www.ccbusca.com.br/webservice.php";

ret = client.ws_pesqcpf("VISUALFIX01", "XXXX@", "302X");

When I run this code snippet, I'm getting this error:

  

Additional information: The customer found the content type of   'text / html; charset = UTF-8, text / xml; charset = UTF-8 ', but   I was expecting 'text / xml'.

The webservice response came right below in the same error message.

<?xml version="1.0" encoding="UTF-8"?><SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"><SOAP-ENV:Body><ns1:ws_pesqcpfResponse xmlns:ns1="urn:cbuscaws"><return xsi:type="xsd:string"><?xml version="1.0" encoding="utf-8"?>
<xml>
  <ocorrencia>
    <codocor>0</codocor>
    <msgocor>encontrado</msgocor>
  </ocorrencia>
  <cadastro>
    <cpf>XXX</cpf>
    <nome>OTAVIO</nome>
...

I also tried to make the request using HttpWebRequest, but without success.

string url = "http://www.ccbusca.com.br/webservice.php/ws_pesqcpf?usr=VISUALFIX01&pwd=visualfix2016@&cpf=30264304802";

            System.Net.WebRequest request;
            System.Net.WebResponse response;
            System.IO.Stream dataStream;
            System.IO.StreamReader reader;
            string responseFromServer;

            try
            {
                // Create a request for the URL.
                request = System.Net.WebRequest.Create(url);
                // If required by the server, set the credentials.
                request.Credentials = System.Net.CredentialCache.DefaultCredentials;
                // Get the response.
                response = request.GetResponse();
                // Display the status.
                Console.WriteLine(((System.Net.HttpWebResponse)response).StatusDescription);
                if(((System.Net.HttpWebResponse)response).StatusCode == System.Net.HttpStatusCode.OK)
                {
                    // Get the stream containing content returned by the server.
                    dataStream = response.GetResponseStream();
                    // Open the stream using a StreamReader for easy access.
                    reader = new System.IO.StreamReader(dataStream);
                    // Read the content.
                    responseFromServer = reader.ReadToEnd();
                    // Clean up the streams and the response.
                    reader.Close();
                    response.Close();
                }
            }
            finally
            {
                request = null;
                response = null;
                dataStream = null;
                reader = null;
            }

In this way, I could not see the data. I returned an HTML code from a page that might be a default message for error 404.

Primary URL: link Method: ws_pesqcpf Parameters: usr, pwd, and cpf

So, should not my URL be this? link

Querying via SoapUI works. I can see the data.