A Yorkton, Sask. small business operator says he's fed up with the calls he's getting from a Montreal-based office supply company that's facing charges under the federal Competition Act and Criminal Code.

Kevin Krause, who owns a Booster Juice franchise in the city, says he's received about 100 calls in the past two years from Express Transaction Services, which was among four companies raided by police in Montreal in 2007.

The company has been asking payment for products that Krause says he never ordered and doesn't want. He said he's been berated and sworn at by a woman named "Nancy" from ETS, who harasses him for money.

"One conversation she'll be like, 'You're an idiot,'" Krause said. "Two weeks later she'll be like, 'Kevin, we need you to pay your bill'."

Krause said he did order some supplies after he was offered a great deal on receipt paper.

However, another order came and the price for the supplies had gone up. After that, Krause said no to new orders, but according to him, the calls kept coming.

"So sure enough, time goes on and I receive another pack of paper and invoices and it's just getting ridiculous," he said. "Upwards of $1,000 now."

The Canadian Anti-Fraud Centre says there are thousands of companies receiving similar phone calls.

The Competition Bureau says it has the power to try and seek an injunction to close ETS down, but it won't comment on why it didn't do that because the case is already before court.

An ETS official told CBC News its business practices are "sound," but also said the company is shutting down at the end of this month because of the negative media coverage it has been receiving.