On Sunday, AT&T revealed its decision to provide a $5 bill credit to numerous customers who experienced the extensive cellphone service disruption last week.

The outage, reaching its peak on Thursday, impacted over 70,000 customers.

Earlier in the day, waves of outages were reported, affecting more than 32,000 and 50,000 customers at different times.

“We apologize for Thursday’s network outage,” said AT&T, based in Dallas. “We recognize the frustration this outage has caused and know we let many of our customers down,” CNBC reported.

In a statement issued on the day of the service disruption, the company explained that an initial review determined the service interruption was a result of “the application and execution of an incorrect process used during the expansion of our network, and not a cyber attack.”

The Federal Communications Commission initiated an investigation into the outage, with support from the FBI and the Department of Homeland Security, as confirmed by White House officials.

AT&T clarified that the $5 credit might take up to two billing cycles to become effective and specified that the reduction would not be applicable to prepaid, business, and Cricket Wireless customers.

Written by B.C. Begley