Good R12 refill shop in Los Angeles area?

[Brian300E]

Hello all -

I sourced the leak of my air conditioning with a dye test, but I'm about a pound or so low and need a refill. I've made three different appointments at Pep Boys, but each time I've arrived at the shop to be told that their AC mechanic was not there. I never received any courtesy phone call to let me know that he was unavailable, and I refuse to patronize their business after wasting 4 hours driving to Pep Boys in the San Gabriel valley.

My question is: Does anybody know of a good/honest AC shop near Pasadena, or farther (I'm willing to travel), that charges a fair price for R12 refills? Thanks.

Brian