In reply to Benclark1989:
I've climbed in Colombia but not the others - would recommend making the trip to Mojarra and staying at the Refugio la roca, I can pass on details if need be. Absolutely loads and loads of beautiful sport climbing on compact red sandstone facing into a valley (a bit like waterval boven in SA), a climbers' lodge at the top of the cliff run by really friendly people who make great food. You should be able to hire ropes QDs and a guide, I would have thought, and it's really cheap.
If you're doing Colombia I'd also massively recommend the El Cocuy national park and can recommend a good guide - the only climbing up there is mountaineering / trad, so far as I'm aware, but it is one of the most stunning places I've ever been.
Enjoy the trip!