Thanks for your question.
If you cannot attend there offices then you have to write to them again. Email them and copy in as many of your contacts there as possible. Make the email as "High Importance" and subject "Letter before Intended Legal Proceedings". Outline the situation and ask to be refunded in full within 7 days of the date of the letter. State that if you do not then you will issue a claim for the monies at Court via http://www.moneyclaim.gov.uk/ as well as making a concurrent complaint the Association of Residential Lettings Agents (if they are a member) and Trading Standards.
State that you will also claim costs (you may be able to claim some) and interest on the sum owed. Refer to costs as including legal fees, but I wouldn't instruct a solicitor to for this because on the facts it is a clear breach and you can easily prepare the application yourself. If they do not pay the money back then you will be forced to issue via the above site, it's very easy and straightforward to use but my guess is that they will pay the money back without the need to issue.
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