Pause the game, then access the cell phone. Select "Dial", then enter one 
of the following numbers, and choose "Send" to call the corresponding 
service:

Service              Phone number
---------------------------------
Airport            - 5553597
Big Willy's Cab    - 8198415
Bling Bling        - 5554233
Brown Baggers      - 5553765
Cocks              - 5552626
Company of Gyros   - 5554976
Cycles             - 5552453
EagleLine Yellow   - 0180174
Emergency          - 911
Eye for an Eye     - 5555966
Foreign Power      - 5552046
Forgive and Forget - 5554448
Freckle Bitch's    - 5556328 	
Friendly Fire      - 5554867 	
Fire Department    - 5553473 	
Giftshop           - 5557577 	
HazMat             - 5556677 	
Image as Designed  - 5558459 	
Impression         - 5553248 	
Leather and Lace   - 5552662 	
Legal Lee's        - 5559467 	
On The Rag         - 5555926 	
On Thin Ice        - 5552564 	
Police             - 5557973 	
Pimps 'R Us        - 5557467 	
Rim Jobs           - 5553493 	
Rusty's Needle     - 5558287 	
Ship It            - 5557447 	
Spelunkers         - 5552283 	
Suicide Hotline    - 4876837 	
Tee'N'Ay           - 5559866 	
TNA Taxis          - 4558008 	
Ultor Security     - 411