Ditched Windows in 2014 and it was the best thing i did for my IT business. Had a 2012 macbook, recently updated to a 2018 macbook. We do web, apps, and services. Its crazy fast, no crazy updates and viruses. Have an old ryzen 5 desktop for when windows customers needs a hard drive swap/copy.

You can try emailing them your invoice and business license, proof of work, etc. ive heard tagging on twitter could work…