Jaquar — sanitary unit

Address: 400092

I am complaining about the flush which we are using as sanitary unit in our washroom. When we push it to flush then it takes long time to come back to its normal position. By the time it takes time to come back to its normal position lot of water gets wasted. Approximately it takes 15-20 minutes to come back to its normal position. Please do the needful to help us for the same.