Metatags not working

Hello, i did my part on my site.... using titles, meta description, metakeywords, and that is not too much for google results on search engine... is not working, still showing the old text-data (changed 1 week ago). I call the crawls to visit me on webmasters tool, but still not working. 

On my site-search-results is not showing the metadescription, 

What can i do? Am i doin it wrong?    sorry for my english, im seo begginer.  

Really need help im a totally web-based bussines. 

i really appreciate the time that it takes to answer me ... 

  

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