HMWSSB — Tanker Driver demanding more money

Hi, I stay at Defence Colony, Sainikpuri. The water tanker drivers are demanding additional 50 /- as they say our tank to tanker distance is 30 ft. Last two years we have been residing at the same place. During this period no one has demanded this. Suddenly from past 3-4 months they have been demanding this. We have complained this to Sravanthi / Praveen and other managers [protected] /[protected] but they are unable to take any action. Kindly help. The drivers talk very rudely with ladies at home.