[mothered]

But the ones where you can burn the number and get new one immediately are worth the few bucks a week.

As posted here.

Correct those are all good apps but I found TextNow lets you change numbers like 10 times before they make you wait I think 48 hours.  The rep told me there is no set limit when I asked why I couldn't make anymore. 

A bit expensive but just ask Apple for a Refund.
Apple refunded me $99.99 for a year of that sexbot/chat app Replika and I still have the premium service for it

Sounds like TextNow offers a much better service than those listed.

Thanks for sharing your experience.