Rear bumper fell off driving in rain

Hello folks 2022 model Y 29K miles. Rear bumper fell off just like that driving through a few inches of water accumulated by rain. This was internal road and I wasn't even speeding. I know rear bumper has been an issue with Teslas which they officially acknowledged in the past but didn't know it was this bad. Reached out to service center via app and they asked me to drive the vehicle 8 miles in this condition to come for service and gave an appointment for 10 days from today. When I asserted the car isn't in a condition to drive as you can clearly see, they told me to call insurance roadside assistance (which is also Tesla). Any recommendations? I'm in San Francisco Bay Area.