Remember Battle of Britain Simulation? This was a £9.95 Vic 20 game advertised in October 1983 by London-based Maincomp. The advertisement said that for every copy sold of this game of "skill, cunning and wits", £1 would be donated to the Royal Air Forces Association (RAFA).

But a customer dissatisfied with the product has asked Maincomp for a refund but has not had an answer. And the RAFA has not heard from the company since June 1983, nor has it any record of any donations from Maincomp.

A representative of Maincomp told us the company had sold 1,500 programs - but refused to comment on customers' letters or the issue of donations to the RAFA.

Maincomp is at 1-2, Cambridge Gate, Regents Park, London NW1 4JN (01) 487-5435.