Absolutely the biggest clue something is going to go drastically wrong!

Also notice, whatever provider you are switching from, as soon as they know you are leaving they suddenly offer some huge discount pulled out of somewhere, everytime.

I can only hope when these boiler room sales slugs go to hell that they get assigned to a looping boiler room conversation until our universe cools in a trillion years or so, since that's how long it takes to get through the obligatory exit survey to get a quit code or something.

It's very much like buying a car after you say yes to some bucket of bolts, because then you have to go to a back room where some super greasy sales slug attempts to upsell you all manner of after sale bull shit.