CHARLOTTE, N.C. A week after temporarily closing nearly 40 uptown mail collection sites for the Democratic National Convention, the Postal Service has opened a hotline for customers with concerns over the changes.

Postal officials said the “added layer of accessibility” was necessary in light of security restrictions, street closures and traffic concerns associated with the convention this week. The Postal Service is closed Sunday and Monday, for the Labor Day holiday.

“We want to make sure out customers know we’re still here,” said Angela Curtis, Mid-Carolinas District Manager for the Postal Service.

“Our goal...of timely delivery doesn’t change, even in the face of such a large event.”

Uptown streets have been cleansed of unnecessary obstacles to accommodate the convention and it’s 35,000 visitors, including the removal of blue mail boxes and covering of mail chutes, which security experts feared could hide explosive devices. Free standing newspaper racks and even 100 concrete garbage containers were also removed, officials said.

The Postal Service issued a list of affected sites, including mail chutes at the Bank of America tower, Hearst Building and Transit Mall. A small section of R.C. Josh Birmingham Highway near the airport has also had its service curtailed.

Due to the holiday, the hotline will not go live until Tuesday, at 7 a.m. and will operate through Thursday at 5 p.m.

Customers may call 1-855-206-0089 and speak directly to a representative who will answer questions, investigate postal issues or provide information. The Postal Service will be closed on Monday, September 3 in observance of the Labor Day Holiday.

Normal delivery will resume in uptown by Friday, Sept. 7, and blue mail collection boxes and mail chutes will be back in operation by Monday, Sept. 10, officials said.