Two banks are Interbank, 2 de Mayo on the Plaza de Armas (tel. 076/362-4600), and Banco de Crédito, Jr. del Comercio 679 (tel. 076/362-742). Neither of these banks exchanges traveler's checks. There are generally money-changers on the Plaza de Armas and Jirón del Batán; there are also several small casas de cambio in the same area.
In an emergency, call tel. 105. The police are located at Amalia Puga 807 (tel. 076/362-832). For medical attention, go to Hospital Regional, Mario Urteaga 500 (tel. 076/362-156); Clínica San Francisco, Avenida Grau (tel. 076/362-050); or Clínica Limatambo, Puno s/n (tel. 076/364-241).
For Internet access, try Efenet, Jirón Dos de Mayo, CyberNet, Comercio 924, or Atajo, Jr. del Comercio 716 (tel. 076/362-245). Atajo is open until 1am and offers cheap international Internet calls.
Cajamarca's Serpost (post office) is at Amalia Puga 778 (tel. 076/364-065). There's a DHL/Western Union office at Dos de Mayo 323 (tel. 076/364-674), within the Cajamarca Tours office. The Telefónica del Perú office is at Dos de Mayo 460 on the Plaza de Armas (tel. 076/364-008).
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.