Rto India — rude behavior of staff and no proper information

Address:

Solapur, Maharashtra, 413107

On 4th october 2018 i sawonline price of choice number mh 45 aj 7557 as 3000 thousand rs. At 1545 lt i went to cashier counter at akluj rto and asked them to accept my demand draft and book my number. Cashier mr zambre refused to do so by reason that i have plenty other jobs to do and all that. After series of requests he accepted the draft n asked to collect receipt today. Today i traveled a long and after reaching at rto cashier said draft of 3000 not enough and make rs 4000 draft now.
I am totally disappointed with this kind of sudden changes and why i need to pay more than online price of that particular number??
People from rural areas travel long to reach rto office but due to lack of proper information from such people they are misguided and hence keep running around again and again. Yesterday cashier simply accepted draft and today he says that he require draft of 4 thousand. Kindly advise why another one thousand for???