HDFC Bank — voltage issue

Address:

P-3, 5th floor, 501, Krishna Apra Plaza,Sector - 18, Near Metro Station,201301, Gautam Buddh Nagar, Uttar Pradesh, 201301

We are facing voltage issue in p-3, 5th floor, 501, krishna apra plaza, sector - 18, near metro station, 201301 since yesterday. Please arrange someone and get resolve the issue urgently. Due to which power supply not coming properly in branch and all the instruments like. Ductable ac, coputers, ups ect. Are not working, and we are facing lots of issue.