xfinity mobile one year free

I was offered a one year free unlimited phone line when signing up for xfinity service. I then started to get charged monthly and have spent hours on the phone trying to get a credit back for the charges. A ticket was opened and I was told it would take 60days to get refunded. I called back 60 days later and was given the run around again saying they could just give me a 40.00 credit. The agent just reads from a teleprompter. It is a complete SCAM!!! Please be aware when signing up for these services.