I try to put on my email signatura a LINK to call me like this

<a href="tel:+1800229933">Call us free!</a>

But the wysiwyg change my html code, putting a "http://" before the href data, like this

<a href="http://tel:+1800229933">Call us free!</a>

give me a error when the peoples go to link..

Any solution for this important issue i think?

Thanks