I will bet a large amount of money that the poor responsible network engineer is either in India, or has an H1b visa.
A little story.
We upgraded Internet service from a large carrier on which our primary DNS server resides. So it's critical. I made sure to tell the carrier that you need to take the config from the existing Cisco router for our routes and port it over to the new Cisco router, taking into account any code changes that make commands on old router not work on new router. NO, I should not have top tell them that, but I did (and do).
But the initial engineer mucked up the porting. It took multiple phone calls and one week to Mumbai to get the information ported correctly. In the interim, we had connectivity problems both inbound and outbound due to the config being ported over in an incomplete manner.
HT - Thank you PingPlotter for your tools that helped provide additional information to confirm it was the carrier and not us. The carrier sales rep wanted to talk with us about BGP and I said NO WAY, NO HOW.
By the way some of the engineers in Mumbai were very good, but a couple were not and it caused no shortage of grief and heartburn.
BTW our DNS worked fine during all this - we just could not push changes as the Primary was down. We could promote a Secondary to a Primary but I kept being told "we almost have it fixed".