Basically went over usage on one of them telecommunication service , however the problem occurred due to unawareness of consumptions which was previously notified by an sms , I made the technical department aware about it why they did accept and they told we have sent an approval to finance team and now finance team is saying we can't do anything even if it was technical mistake . They are making coming false assumption that your mobile no may have not been registered when in actual they are even sending me the usage messages even this month and even notifying me about the bill payments frequently.