[michaelt]

I agree that in principle companies ought to honour their commitments, even through changes in ownership.

But without knowing what tomerv means by "Some time later I wanted to use it" it's hard to say if refusing is all that bad for business.

You don't want to upset regular customers or active members of the local climbing community - but regular customers don't take years to use up a 10-entry voucher.

If tomerv's voucher was 5-10 years old, the threat that someone who hadn't brought anything in years would start a boycott wouldn't exactly have them quaking in their boots.