Hi Whoimbougoi94
It is really not recommended to buy Supersaver Tickets in this case. Yes, it is possible to buy a new point-to-point ticket for the same route/date/person and to ask for a refund, but you have to pay a fee of 10 CHF.
Saver Day Passes may be cheaper as regular tickets, they are valid in every train until the following day at 5 am.
Kind regards
Danhiel