Everyday “The DNS server isn’t responding”

For the past couple weeks now I’ve been having issues with my internet cutting out just in the morning. I just now found out about it because I’ve switched shifts, so who knows how long it has been going on because after work I have connection fine. Anytime I contact support it’s the same rinse and repeat answers from unknowledgeable people, my modem is the Netgear c7800 which was one of the approved modems.