Brinks Home Security review: Don't honor orig agreements. Poor customer relations

I originally started service with LiveWatch over 10 years ago, which got sold to ADT, which got sold to Brinks Home. LiveWatch did NOT require a contract. I had no problems until things got turned over to Brinks. In fact LiveWatch provided excellent customer service in the initial years. They would have received 5 stars.

1. After several years of service, the monitoring service was turned over to some other company who did not have a caller ID of any of the above companies. Because I screen my calls, I missed two calls about alarms and got a fine from the sheriff's department. Brinks should have informed me about the phone number change.
2. Then Brinks started pressuring me to sign a contract to "insure" that I wouldn't get an increase in my monthly monitoring service.
3. I decided to go to another company for security and cancelled my Brinks service in October 2024.
4. Brinks then started billing me for service for November of 2024, even though they did not provide any service for that month.
5. Because I refused to pay for services not received, they continue to invoice me including late charges for November NON-SERVICE.
6. Their excuse is that it takes one billing cycle to cancel service, even though they don't provide the service.
7. Since I started with no contract, I don't see that Brinks has the right to unilaterally add contractual terms.