Multimedia international advertising...Help

[Lottie1]

Please help. My husband was approached by a rep selling advertising space on a TV screen in local estate agents, my husband didn't sign up for it as he told the rep he wanted to think about it, this was June. We have now received a letter from Multimedia International of notice of legal proceeding concerning an unpaid deposit of £250 and outstanding payments amounting to over £2000 pounds. I phone them and they emailed the agreement he had supposedly signed, it has a company name of Property 365 and it is not my husbands signature, also the boxes with account details and payment instruction are empty. My husband didn't sign anything. The card the rep gave my husband with his contact details on was the estate agents card and when we went to see them they told us they have nothing to do with this, although an advert has been appearing on the TV screen for my husbands business. Can anyone advise us on what to do.