Who called from 4085564000

It is NOT Apple
It's a telemarketer. You can Google apples support or contact phone numbers and that's not one of them

It is very much apple as I've been working with them on an issue.

It's Apple Support.

I received a call from this number on my tablet on an app that's a text free app.... I don't know why apple would be calling me considering it is not an apple product.

Whoever says it's Apple is from that fraudulent company, Click4Support.  It's objective is to steal your identity and money.   Apple does not use this number.   Go to the Apple Store and get their actual phone number.