I called 311(police non emergency #) and it was restricted or unavailable and told me to contact customer care. What is their customer care#?

Sometimes, non emergency lines can be backed up.  Most likely, you'll just have to call at another time. 

According to the Austin Police Department, here are the specific numbers to call, if you haven't tried calling the actual number, instead of just "311", 

"Residents should call 9-1-1 only for police, fire or medical emergencies. When calling 9-1-1, stay on the line and try to remain calm with your information ready. If you are calling to file a police report, it can be made by calling Teleserve at 3-1-1. If you are calling from an area code other than (512) the number to 3-1-1 is 512-974-2000. To contact a specific police employee or unit call 512-974-5000".

Lyricia, the Police are probably just as bored by your repeated claims of rape X years ago as I am.  Call back and ask what the "customer care" number is.  I find it interesting that you've asked the question over and over and over, and you STILL don't understand the "go to the Police Station with your PROOF and file a report" advice.