if wired internet is down as well as all wifi, then you should have them send you replacement devices and see if it continues. If it continues, there could be an issue with one of the lines going into your house. My friend bought a house and it def needs work, but the internet stopped working and they found a burned out wire. And i think xfinity is more likely to replace the equipment first before sending someone to repair the line into the house.
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if wired internet is down as well as all wifi, then you should have them send you replacement devices and see if it continues. If it continues, there could be an issue with one of the lines going into your house. My friend bought a house and it def needs work, but the internet stopped working and they found a burned out wire. And i think xfinity is more likely to replace the equipment first before sending someone to repair the line into the house.