Which is better for storing wine... too hot or too cold? I have some
wine which is already 6 years old and I want to age it for a few more
years.

I live in a hot sub-tropical climate which is well above the 15ºC
reccomended for wine storage. Refrigerating it would be well below 15ºC.

I imagine that while the heat will damage the wine, the cold of the
fridge will slow the ageing process but not actually damage it. Is this
correct?