I went through the same frustration and ended my 2nd call with verizon by asking how to return my equipment. Comcast makes the switch easy and I am sick of verizon's lack of loyalty. I have been a $200 a month customer for 10 years and I get the run around. Done
I had no problem switching from Verizon Fios Triple play (TV, Internet & phone) to Mix & match ( Wi-fi 6 Internet 200/200 $39.99 after $10.00 monthly discount, $20.00 per month home phone and Youtube TV was $50.00 per month, now $65.00). Had no problem returning the TV boxes and old cable modem. There were no charges to switch or installation charges and the technician came out and removed the old ONT box and installed the new one.