Replies contain useful suggestions; but in summary: (1) write to Comet and confirm that (a) the machine is not of satisfactory quality and fit for its purposes, and (b) that you reject the machine and require a refund of the price. (2) of you paid by credit card, ask card issuer to reverse the payment. Say that you made the payment to buy goods which are unsatisfactory. The card issuer is liable to you for breach of obligation by Comet (section 75 of the Consumer Credit Act 1974). It is a good idea to write to Comet head office and ask them to take action. In future when telephoning a business, try to avoid 08 TNs. The excellent "say not to 0870" web site enables you to type in the 08 number and find a geographic code alternative. What you do not not want is being fobbed off. Be consistent and assertive.