Unrefunded cancelled credit card order - is a 90 day limit allowed?

I ordered a Nokia E71 via amazon.co.uk in September and, soon after I ordered it I cancelled the order because delivery was going to take too long.
I only noticed that the credit card payment hadn't been refunded when I did my company VAT return at the end of December.
The supplier is an Amazon selling partner not Amazon themselves.
I E-mailed the supplier (via the Amazon web site links from the order) a week or two ago but got no response. I have tried getting a refund via the credit card company but they say as it's more than 120 days ago that they can't do it and Amazon won't do anything for transactions more than 90 days old.
Are these 120 day and 90 day limits really valid in any way? I simply didn't get the item, surely I have a valid claim at this sort of time after the transaction. How can I set about getting past these (I think) artificial time limits?
--
Chris Green

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This is a civil matter and you are limited only by the time limits in the Limitations Act 1980. Thats generally 6 years from the event that gave rise to the debt.
Simon
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And if the phone cost over £100 the credit card issuer is jointly liable for the contract, and is a far easier target to whom to make that demand.
Tony
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