One big deadline I see coming for them is the payment of their VAT.

Their financial year end is 31st August.

https://www.companiesintheuk.co.uk/ltd/alpha-technology-(int)

They need to have their VAT return filed and normally paid too by 7th October.

http://www.hmrc.gov.uk/vat/managing/returns-accounts/deadlines.htm

If they don't have the money, they will likely shut down and then you will probably never stand a chance of getting your money back.

It may also be worth calling or mailing Manchester Trading Standards

http://www.tradingstandards.gov.uk/manchester/

Manchester Trading Standards Tel 08454 04 05 06 (9am to 5pm)

If they get loads of calls there is a good chance they will investigate.