Give me honest opinion on this idea

Problem background:
Recently, due to my job(as an ERP developer working and integrating third party modules as well) I had to contact various foreign companies. While these companies provides us the sales and helpdesk support by scheduling a call(typically some days later and process done usually by a form), the overall sales and support experience caused our company's project to be delayed a little.
The above problem was just an example of how the "contact us" option hampers user's experience. Also, most of the "call now" options are limited to the particular company's locale.

Solution:
After brainstorming for a bit, I struck with an idea to provide a in-browser, widget based(website snipped) based sales and support team online call/conference platform. Where user can find a simple call option on the website of the company and they can either directly call the company or if the call is not successful(busy recipients), schedule the for the next day and collect details too.

I am open for further discussions and honest criticisms. Also like to hear an opinion from experience person regarding my idea.

Thanks for the read everyone.🙌