Whitefish Energy on Wednesday asked San Juan, Puerto Rico Mayor Carmen Yulin Cruz if she wants the company to remove its workers who are helping to restore power on the island, after she called for the company's contract to be canceled.

"We've got 44 linemen rebuilding power lines in your city & 40 more men just arrived. Do you want us to send them back or keep working?" Whitefish wrote in a tweet to Cruz.

Cruz told Yahoo News on Tuesday night that she was alarmed by the $300 million contract Whitefish signed with Puerto Rico Electric Power Authority to rebuild 100 miles of power across the island.

Cruz, who has been a persistent critic of President Trump's response to Hurricane Maria, called the contract award "alarming," and said it "should be voided right away and a proper process which is clear, transparent, legal, moral, and ethical should take place."

Whitefish released a statement Wednesday fighting back at Cruz.

"We share frustration with Mayor Cruz on the situation in Puerto Rico, but her comments are misplaced," the company said.

Other public officials are worried about the size of the contract and scale of the job awarded to Whitefish, a small Montana-based company that had two full-time employees the day Hurricane Maria hit Puerto Rico.

House Democratic Leader Nancy Pelosi of California demanded an investigation Wednesday into the circumstances behind the contract.

Natural Resources Committee Chairman Rob Bishop, R-Utah, also will be looking into the contract, his office said, and the lawmaker is visiting Puerto Rico this week to learn more about it.

In addition to questioning Whitefish's qualifications, some lawmakers suspect Interior Secretary Ryan Zinke played a role in picking the company because it is based in his hometown. Zinke and Whitefish say he had nothing to do with the contract.

Whitefish says it now has 300 contract utility workers on the ground in Puerto Rico, with about 15 or 20 more arriving each day.