Got a call from "Sonicwall Renewals" stating I get a free NSA if I renew Security Suite for 3 years. Are they legit?

The caller ID said Sonicwall Renewals and they had the serial numbers of my NSA's that I have. They want me to renew our advanced security suite for 3 years and they will give me a free TZ 300/400 or 500.

Something sounds off and I'm wondering if they are even with Sonicwall at all.