AC750 Wifi Range Extender Firmware Update

I had this happen today! I was trying to set up this extender and somehow got onto a chat and they asked if I wanted to talk to a tech. Gave them my number and they called from a new Mexico number. Well once I heard the word firewall security I knew something was up. I'm on a VPN that my brother set up so my IP shouldn't be visible at all. When they had access to my laptop they pulled up some random website and in Chinese. Luckily I was smart enough to type in my router access code myself and not give it to the guy. As soon as he said it cost 199.99 for 3 months I knew it was a scam and I called him on it. He got mad at me for calling it a scam. I said why would something I literally just purchased for less than 100 dollars require me to have to pay an additional fee for a firewall? He was all like well netgear doesn't produce the software just the extender we are trying to protect you. Thank God I don't have the extra money right now and have been dealing with scammera trying to get my dad for awhile now I smelled a rat. So he told me if I didn't trust him to hang up they couldn't help me but it wasn't a scammer. I had a feeling so I stayed on and muted my self. As I disconnected the screen access but kept the websites up so I could go thru and see their validity. I cannot believe this happens! Netgear needs to put out a statement or something saying they will never require additional software because some people are as with it and are too trusting. I ended up returning the extender and got a different brand and had no issues getting it going.