estate agent took too much off rental deposit

[jentee]

how can I go about getting representation to get money from the estate agent? they say the landlord has made their decision and so I'm not getting just under �200 due to me. They say the amts are for council tax that was undercharged and a fee an electrical company charged for once I missed their visit. This 'no show' charge was �20 and i paid by cheque(i have email from the company saying there were no more costs incurred and the �117 on the recipt i have from landlord claiming is for this call is not valid). Council tax has also been cleared as the estate agent told them i'd moved out 19 days later than i actually had and I have a letter from them exonarating me. I feel foolish quibbling over a relatively small amt of money but am also angry that i am being taken for a ride. I appreciate any help..jentee