Update Router Scam

I just got a call from a person claiming to be from Comcast and that my router needs to updated to 5G.  (5G is for cell phones which was weird)   The caller was not from the US and claimed that he work at a Comcast call center in the Philippines.  (That seems weird too.)   The man then wanted me to download a free version of TeamViewer to get access to my computer and I hung up without downloading.    I can give you phone numbers if you wish but the numbers were most likely spoofed.