Leeds fans have grouped at the Keepmoat Stadium looking for tickets
Doncaster Rovers has closed its ticket office after being besieged by Leeds United fans looking for tickets to Sunday's play-off final at Wembley.
More than 100 Leeds supporters gathered at Doncaster's Keepmoat Stadium after being told their own club had sold its 36,000 allocation of tickets.
Stewards were called in at the ground after staff were verbally abused.
Rovers wanted to give 6,000 unsold tickets to Leeds but the Football League has not allowed the swap.
Club chairman, John Ryan said: "I feel so sorry for the Leeds fans, I saw them all queuing.
"I contacted the Football League and asked if we could send some tickets back.
"Our average gate is 8,000, I think we've sold 24,000. We have around 6,000 that we could have sent back for Leeds United but the Football League said because of segregation problems there was no way they could do that."
Doncaster ticket office staff are still taking orders by e-mail, phone and fax but only for fans on its database.
A Doncaster spokesman said: "Some Leeds fans are upset and angry and we have brought in staff and stewards to calm and placate them.
"We are telling fans not to gather. If you turn up you will have to fill a ticket form in, and all ticket requests will be vetted.
"We are trying to vet everyone who comes through but it is quite possible that there are Leeds fans who have managed to get tickets."
'Watch from Leeds'
The Football League wants to avoid Leeds fans sitting in Doncaster seats and has told Doncaster fans that unless they are on the database they will not be allocated a ticket.
Anyone with a Leeds or Bradford postcode will not be allocated a Doncaster ticket.
Leeds had been allocated a total of 36,000 seats for the match and thousands of fans queued outside Elland Road for the last 10,000 tickets.
The club hopes fans not able to attend will support the club from Leeds on Sunday.