Xfinity complaint: APPOINTMENT COMPLAINT

On 101422 my wife called to see how to replace a battery in the alarm system. Xfinity gave the option to mail us a battery. On 1027 we called again as we had not received the battery. Xfinity looked and said there was a problem with their order. They ordered a 2nd time. On 111022 i called a 3rd time for informationresolution. Xfinity said they saw where the battery had been ordered and i should have received it. They asked if i wanted them to order it again. I said no, i want someone to come and fix the problem. They set up an appointment on 111722 between 3 – 5. At 4:45 i received a message the technician was delayed and they would notify me when they were on the way. At 8:45 i called to check status and was told they would not be there. They gave me another appointment for 123 (two weeks from now) for coming out and taking care of my problem.
When they couldn’t make it as promised, i should have been the 1st on the list for the next day, rather than having to set up a new appointment and being pushed back to the bottom of the list. This is really bad customer service.
Something needs to be done to take care of my problem, without having to wait this long to have it taken care of.