Buy a new one
Bike shops and hardware stores sell rubber and vinyl repair kits that should work.
just buy a new one
Horrible
Normally yes but of course the answer entirely depends upon when you purhcased your air mattress and from where , and also your reasons for returning. But your consumer rights should be considered....
Don't poke a hole in it.
How to Remove the Macbook Air Airport
How to Remove the Macbook Air Speaker
How to Remove the Macbook Air Magsafe Board
How to Remove the Macbook Air Logic Board