19. A computing apparatus comprising: at least one microprocessor, and memory storing instructions configured to instruct the at least one microprocessor to at least: associate, in the computing apparatus, a plurality of call-in references of a plurality of different regions with respective different language preferences, wherein each of the call-in references is local to a first one of the regions but not to at least a second one of the regions; identify, by the computing apparatus, regions in which callers reside; provide, by the computing apparatus, a listing of a callee, the listing presented to the callers in different regions including different call-in references for receiving calls from the callers, different prices of services provided by the callee via the calls connected to the callee, the prices determined based at least in part on the call-in references used to make the calls, and different user inputs about services provided by the callee in prior calls filtered according to regions in which the callers reside; receive, in the computing apparatus, the calls via the call-in references from the callers; customize, by the computing apparatus, interactive voice response prompts presented during one or more of the calls to one or more respective callers based at least in part on the language preferences associated with the call-in references via which the calls are received; and connect the calls to the callee based on responses to the interactive voice response prompts.
20. The computing apparatus of claim 19 , wherein the callee specifies a single price; and the prices provided in the listing are computed based on the single price, currency exchange rates, and telecommunication costs for connecting the calls received via the call-in references to the callee.