Communication Breakdown

I scheduled a technician from Comcast to come to the house this morning.
I received an automated call from Comcast yesterday reminding me of the appointment and noting, "Our technician will call before coming to your house and will not come out if no one answers."
Last night I realized I had a conflict so I called Comcast and rescheduled for next week.
This morning my son who is supposed to be taking one of his final exams sends me a text message telling me that his mother wants me to call Comcast.
I can only assume there is a Comcast truck outside our house having not called in advance. The house where my wife is and I am not.
I tried calling my wife to get an explanation but she does not answer the phone.
I am not calling anyone because this is clearly not my {radio edit} problem.

Update:

1. Post edited to remove unnecessary foul language.
2. Very impressed at how quickly Comcast found this post and offered to help!
3. Turns out my wife did not know I had already rescheduled the appointment and since I was driving sent a text message to my son to "remind dad to call comcast"
4. Teen son did not notice said text message until he was in school and sent a message to me that read "Mom says to call Comcast."

Funny enough…communication breakdown still applies.