Xfinity service is terrible

Never tired of constant issues.  No wifi all day and I work from home .I called 4xs and was originally told my internet was working great. Not. Called 3 more times and finally got a live person on the line. She ran tells for 3hrs and told me I need a new modem. She said a technician will be coming out . She will check availability.  Then I get text for appt on Friday. This works mean no internet for 3 days. I work from home and can't be without service. So loyalty dept was brought on call and then I spoke to a women who said they works escalate my issue because I have had so many issues and a technician would be out tomorrow.  I called back to confirm because I never received a confirmation text and was told . No your appt is still Friday. The women eneted notes that tech was coming out tomorrow but a ticket was never put in. What!!  I was on a call with them for 3yrs . I also am paying for 1000 gig plan and I am getting 1/10th of that speed on a good day. Today it was 51 download speed. It has never been more then 126 or close to that. So I am paying since last May for very fast service and getting very very slow internet. I am so disappointed with Xfinity.  And it is almost Impossible to speak with a live person. Xfinity also raised my monthly charges. For what . I am paying for speeds I never got. I need a technician tomorrow as promised.  This is horrible!

From a very unhappy customer. 

And I should be credited for all the time I had no internet and the slowest speed