Valpre Sparkling Water

I am a VERY regular drinker of Valpre sparkling water and have been for years and in the past two to three months I have purchased numerous bottles which have no gas(flat) and do not close properly once opened.<br> <br> At first I thought it was one specific supplier (Pick n Pay) but soon started realizing other outlets are supplying these with the same problem. Please note that I sometimes buy 2-3 bottles a day and I have had instances where all the bottles are flat.<br> <br> This has also in-turn resulted in water damage to my Macbook pro laptop as I had a \closed\" bottle lying next to it on my bed only to find that it was leaking and my laptop now needs to be repaired and possibly even replaced."