"I Don't Know"

"I don't know" is an acceptable response- as long as it is followed up with a plan of action.

There's a mechanic at Scootertronics who seems to think that "I don't know" is fine by itself. Well, it isn't. If the management trusts you enough to answer the phones, then you have the responsibility to be useful on the phones.

Next time, try responding with- "I don't know... but I will ask my manager and call you back with a response."

Anyone who interacts with a customer is part of your marketing and brand image. If they suck, then you suck. Period.