There is another Cercomsa (am I spelling this right??) in Santiago. It's up the road from Hache ferretera. There is also a big Scotia bank plaza type of thing.
If you are on the main road where you pass Burger King, then you pass McDonald and kfc and national will be on your right as well as McDonald.you travel that road for a bit maybe 10 min? Ok so you turn right on the main road right before that SB plaza and cercomsa will be on your left after about 5 min
I think they must be th main office. They were very nice but weren't quite sure what I was talking and I had to talk to 3 people it was for a 17 inch MacBook so thought it would be pretty straight forward.
Finally a lady found it the Warehouse behind them.
I was kinda surprised by the price I do t even remember what it was but they gave me a discount of 1000 pesos I guess by I made a joke about it being Cheaper in Canada??
Anyways they are very nice.
Even if the OP doesn't use it thought is would be good for people to know about this one as well.