I've had the exact opposite experience trying to get support setting up a VPN to connect an on-prem server with remote clients (using self-signed certs and terraform). I'm not very familiar with Azure and I was volunteering my time/expertise but the support (paid but basic plan, I think $100/mo) was very underwhelming. The support technicians were all Indian and while they were polite and had good English, the time difference made the back-and-forth painful.
Spent over a month trying to resolve the issue but I must've been talking with tier 1 support because it was obvious the support technician wasn't very technical (asking very basic questions that I had already answered, couldn't answer any of my questions without getting back to me days later). Combined with the quirks and performance issues (30+ mins to setup VPN gateway) it was a very poor experience and I wouldn't choose to work with Azure in the future.
Spent over a month trying to resolve the issue but I must've been talking with tier 1 support because it was obvious the support technician wasn't very technical (asking very basic questions that I had already answered, couldn't answer any of my questions without getting back to me days later). Combined with the quirks and performance issues (30+ mins to setup VPN gateway) it was a very poor experience and I wouldn't choose to work with Azure in the future.