(KTEN) — Following frigid temperatures that swept across North Texas last month, Gov. Greg Abbott urged the state's attorney general to investigate Atmos Energy for failing to provide all Texans with reliable natural gas.

On December 23, Atmos Energy asked its two million Texas customers to conserve gas use due to low gas pressure.

This request — combined with rising natural gas bills — has Texomans frustrated.

"It is concerning because our gas bill went way quite a bit during that time," said a Sherman resident. 

"I have been using Atmos for about 25 years, and the last 23 years I have had pretty good faith in them," said a Whitewright customer.  "But I am starting to lose faith in them now, because things just do not seem right anymore."

In a statement, Atmos Energy did concede that they need to do better for their customers. 

"We take seriously our responsibility to provide safe and reliable natural gas services, as well as to be a trusted partner in the communities we serve.  That responsibility includes undertaking operational planning and preparation to provide such safe and reliable service all throughout the year.

Despite those preparations, last month we fell short for some of our customers who experienced interruptions in their natural gas service.  That is not acceptable.  And though we worked to restore service as quickly and safely as possible, we apologize for that service disruption.

We are committed to working with our regulators and key stakeholders to address those issues in order to provide reliable natural gas service to all our customers."