Small crack denied service on unrelated issue

I'm pretty disappointed. I was in Whistler about a month ago and using the phone around the pool. I didn't submerge it but it leaked and condensation got into the phone. Additionally, the phone has been exhibiting significantly poor speaker phone.

Subsequent to developing those issues, the phone got a very tiny crack in the corner from a drop. I sent the phone in for repair on the water issue and the speaker phone and the repair centre simply sent it back and denied servicing. Does anyone have any tips or ideas for getting servicing? I'm not looking to replace the display, simply the issues that are unrelated.

Thank you.