We sent a newsletter a while ago warning customers about the Domain Registry of America:
Scam alert: the Domain Registry of America
A contact of ours recently renewed their domain name with the Domain Registry of America. This is a legitimate domain registrar, but they charge way over the market rate for domain name registration, and they will write to you when your domain name is expiring without mentioning that you can renew with your existing registrar. Bin any correspondence from them!
Please be aware that these scam artists have changed their name to "Domain Renewal Group" and we received something from them this morning.
Do not respond. Bin the so-called "renewal letter".