The dates and times of the matches are:
Friday 14th, 10:45 am;
Saturday 15th, 12:30 pm
Sunday 16tht, 10:45 am.
Location: Estadio Parque Roca. Av. Roca y Escalada, Buenos Aires.
Tickets are on sale at Ticketek Argentina website.
More information: Davis Cup official website.
For people who want to secure their places in advance, there are tour companies offering a full package that includes transfers, tickets for the three days (abono), permanent coordinator, and snacks. Contact me to receive information about this service.