Use google analytic has the best way to track sales. You can track easily from where you will get the sales.
Copy the snippet below and paste it between the <head></head> tags of the page where phone number appears, right after the Global site tag
It is good that he supports Google Analytics. What advertising channels should you invest in to get the most profit? This will tell Google Analytics and end-to-end analytics www.owox.com/blog/use-cases/end-to-end-analytics-implementation. This is the main problem that worries all Internet marketers. Therefore, when creating and filling the site, it is necessary to flush these parameters. Good luck!