Hi! We can offer you an alternative to calls. You can use our platform to place calls to any carrier and pay using Bitcoin. You get 2 mBTC call credit to a preferred destination, so you can start right away.
With our service you can place calls directly from your browser, so installation shouldn't be an issue. If you're interested, you can check it out here:
https://www.xcoincall.comWe're all about offering an alternative to placing calls and only accept Bitcoin, so we think we'd be a good fit for what you're looking for.