Very annoying service

I was paying my ticket in 4 instalments as arranged with this agency. i paid uo and sent all proof of payments to this stupid agency who neverf came back to me with the last paymentg and now the payment was not updated and shows that i still owe them. no one answers the phone or emails there. its very much expected of such behaviour given thatg they are typical government emloyees. i am nolt paying a ceny mre to them and they had ****** well update their records. such incompetence is uncalled for! yerr