[.net] C# SQL Insert Command.. Not working?

Hi, I'm quite new and have been looking for good advice! Lucky you. Anywayss, I'm writing a program which has to INSERT data into my Access database. Simple, atleast it should be. Having trouble though, its not actually doing it. Can't figure it out either, I assume it mys SQL statement. I don't know how else I'd write it at least. Permissions may be an issue, I'm not sure. Heres the code:

            Int64 id, ctele;
            id = Convert.ToInt64(lbl_add_Id.Text);
            string cname, caddress, cpost;
            cname = txt_Add_Name.Text;
            caddress = txt_Add_Address.Text;
            cpost = txt_Add_PC.Text;
            ctele = Convert.ToInt64(txt_Add_Tele.Text);

   //SQL adapter to gain access to the database, including the SQL statement
            OleDbDataAdapter da_Customer_View = new OleDbDataAdapter(
                  "INSERT INTO tbl_Customers" +
                  "VALUES('" + (id) + "'" + ",'" + (cname) + "','" +                 (caddress) + "','" + (cpost) + "','" + (ctele) + "')",
                  "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\\Documents and Settings\\Me\\My Documents\\"
                  + "SQL Databases\\XMAS SQL Database\\FoodTastic.accdb");
            lst_New_Customers.Items.Clear();
            UpdateCustomer();

Any idas?