service slow make customer gone

today want buy 1 galon aqua from friend shop...
sms... wait... sms... wait... sms... wait... 3 hour go...
delivery not come... out of limit patient... buy from other shop...
friend shop have priority to delivery... first come first get... last come last get...
friend & staff go far delivery... not have staff standby at shop to handle near delivery...

service slow make customer gone.
patient have limit: minimum & maximum.
good shop minimum must have 2 kind staff:
staff for far delivery & staff for near delivery.

patient = not fast.
fast = not patient.