Skype, smart enough, but creates problem for your design with its feature to wrap numbers in button.

As skype’s  forum has suggested for the use of meta tag in the header but it didn’t worked for me.

So what you can do is just add a character in the  phone number and make it invisible.

<div class="ph_number">(403)26<span style="display:none">_</span>0-9021</div>

I have used underscore( _ ) here. You can use any character in it. But make sure you make it invisible. By use of non-numerical character, skype fails to recognize your number.

Simple And Effective. Cheers