They were supposed to be birthday presents. They were supposed to be Christmas presents. They were supposed to be the most special of special treats for fans of music icon Taylor Swift.

But issues with the Ticketmaster website left many empty-handed, frustrated and disappointed.

Fresh off one of the biggest album launches of her career, Swift announced earlier this month she was going on a new U.S. stadium tour starting next year, with international dates to follow. Fans who received a special code after registering had exclusive access to buy tickets Wednesday, ahead of Friday sales for the rest of the public.

The tickets sold out within minutes. Resell retailers like StubHub had tickets on sale for thousands of dollars.

The issues even caught the attention of some lawmakers. New Jersey Rep. Bill Pascrell Jr. tweeted, “Like most of you I’m on the waitlist. Let me know how your experience is today: we’re watching you @ticketmaster.”

Pascrell and New Jersey Rep. Frank Pallone are among several lawmakers who have called on the Department of Justice to look into Ticketmaster’s merger with Live Nation.

“The merger of these companies should never have been allowed in the first place, which is why I have joined [Pallone], [New York Rep. Jerry Nadler] and [New Jersey Rep. Frank Pallone] to call on the DOJ to investigate Live Nation’s efforts to jack up prices and strangle competition,” wrote Rhode Island Rep. David Cicilline.

In a tweet Tuesday, Ticketmaster called demand “historically unprecedented” with millions of people trying to buy.