Sony Bravia LCD TV buyers have been waiting for up to four months for the company to make good on its promise to give them a free PlayStation 3 games console.

Word of the delays comes days after smh.com.au revealed that customers taking part in Samsung's two-for-one LCD TV promotion - whereby buyers of a big-screen Samsung TV set were offered an extra smaller LCD for free - had been waiting up to five months for their bonus TV sets.

Between December 21 last year and January 28, Sony promised that anyone who bought a Bravia high-definition LCD TV set would receive a bonus PS3, as long as they had their receipt and could cite the TV's serial number.

It promised the PS3 consoles would be delivered within 28 days, but four months after the offer began many customers are still waiting.

Readers responding to last week's story about the Samsung delays complained of poor communication by Sony and rejected the company's claims it had run out of stock of PS3s, saying there was plenty of stock in most stores.

"Marketing managers should take note as this type of failed scheme are turning people away in droves from their brand," one reader fumed.

Sony Australia announced in January that 28,000 people had taken up the Bravia promotion. Last week it said 238,000 PS3s had been sold in Australia in its first year.

Tony Barbour, head of strategy and brand development at Sony Australia, issued a terse statement in response to the customer complaints.

"This was an extremely successful promotion and the PlayStation 3 has been an extremely desirable product," he said.

"Sony has worked as quickly as possible to fulfil customer orders, which includes sourcing both Bravia LCD TVs and PlayStation 3 consoles from overseas, in order to satisfy the demand. We appreciate the patience of our customers during the delivery period."

A reader, who did not want to be named, said he was told by Sony his bonus PS3 would be delivered "from May 12".

The NSW Office of Fair Trading advises people affected by such delays to first try to work the issue through with the company, after which they could lodge a false and misleading representation complaint with the department.

The department can contact Sony on consumers' behalf and, if a satisfactory result is not reached, the customer could take the matter further to the Consumer Trade and Tenancy Tribunal, where an order could be obtained.

In response to widespread complaints from Samsung customers who still have not received their bonus TV sets, a product review site, Done Sold, is calling on people to come forward and join a class action lawsuit against the company.