Just had an appointment to fix my problem, it’s happening again and they want to schedule another appointment new appointment

I had an Xfinity appointment on 9/16. I’d had no internet for over a week at the time of the appointment. The tech resolved the issue wonderfully, apologized for any inconveniences prior to. Now on 9/17, the modem began to flash orange, then proceeds to go back and forth between green and orange. After checking the app, it told me that my internet was offline, followed the “assistant” instructions only for the issue to continue. They now want to schedule another appointment to fix this new issue. I wanna know what is going on. This is absolutely ridiculous. I’m a very unhappy customer.