The A300/A310 alarm can be a real ear-driller if you aren't used to it! Usually, you just need to hit the 'AP Off' button on the yoke a second time to silence the cavalry charge. If you’re clicking the dash buttons instead of using a mapped key on your joystick, it tends to just stay in that warning loop. I actually ended up using a simple site like https://onlinealarm.co/ on my second monitor to set 'reminder' alerts for my descent top-of-climb points, mostly because I kept getting distracted and missing my altitudes, which triggers even more annoying alarms in the cockpit.