```ruby
require 'httparty'

module Exotel
  class Client
    include HTTParty

    def initialize(sid, token)
      @auth = {:username => sid, :password => token}
      @resource = Resource.new
    end

    def send_sms(from, to, msg)
      self.Sms
      @resource.append(:send, nil)
      self.post({
        :From => from,
        :To   => to,
        :Body => msg
      })
    end

    def method_missing(method, *args, &block)
      @resource.append(method, args[0])
      @opts = {:query => @resource.options, :basic_auth => @auth}
      if args.size > 0 && !method.to_s.eql?("post")
        execute("get")
      elsif method.to_s.match /\bget\b|\bpost\b/
        execute(method)
      else
        return self
      end
    end

    def execute(method)
      response = Response.construct self.class.send(method, @resource.url(@auth[:username]), @opts)
      @resource = Resource.new
      response
    end

  end
end
```

Fix new SMS sending method
user
```ruby
require 'httparty'

module Exotel
  class Client
    include HTTParty

    def initialize(sid, token)
      @auth = {:username => sid, :password => token}
      @resource = Resource.new
    end

    def send_sms(from, to, msg)
      self.Sms
      @resource.append(:send, {
        :From => from,
        :To   => to,
        :Body => msg
      })
      @opts = {:query => @resource.options, :basic_auth => @auth}
      execute(:post)
    end

    def method_missing(method, *args, &block)
      @resource.append(method, args[0])
      @opts = {:query => @resource.options, :basic_auth => @auth}
      if args.size > 0 && !method.to_s.eql?("post")
        execute("get")
      elsif method.to_s.match /\bget\b|\bpost\b/
        execute(method)
      else
        return self
      end
    end

    def execute(method)
      response = Response.construct self.class.send(method, @resource.url(@auth[:username]), @opts)
      @resource = Resource.new
      response
    end

  end
end
```
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