Storing opened wine (especially red) has never been a problem I personally came across.
Therefore I looked at the problem from a different direction................
The average measure of my wine glasses (filled to roughly a half inch or 1cm from the top) is 100 cl. The normal measure of wine bottles is 750 cl. - therefore about 7 servings. - between 2 people during a meal - three and a half glasses each.
Conclusion
a) If the wine is so unpalatable that there is any left over - use it for cooking !
b) (If only a light drinker) - buy a half bottle
c) Try a different grape / country of origin next time. (Great fun - educational - and my perso- personab- personerabubble wreck o' mendayshun)