LG.com Mary Employee ID 470113 LG gave instructions to remove the battery but an attempt to do this resulted in a cracked case. Internet

My LG mobile phone became locked. When I contacted AT&T, they could not help and told me to contact LG. At LG.com I only got an AI Chat Bot, not a person. The Chat Bot texted instructions to me. The instructions said to power down by pressing and holding the power button but this would/did not work because the phone was locked. Then the instructions said if it will not power down, to remove and then replace the battery. When I attempte to do this, the case was cracked.

When I returned to LG.com after 2-3 tries, I finally reached a support person. She stated that the warranty is now invalid because the case is cracked. I replied that the case is cracked because LG instructed me to remove the battery. Not getting a useful solution, I asked for a supervisor.

Supervisor Mary, Employee ID 470113, basically said the same thing and would not resolve the issue.

I strongly feel that the cracked case is because of the bad instructions provided by LG and that LG should first, correct the bad instruction to prevent anyone else having the same problem and second, LG should replace my broken phone (caused by LG). I should not be punished for attempting to follow LG instructions.