If you did not receive an email, then the purchase did not work. The amount is only reserved and will be returned within 14 days. You have to buy the tickets again.
If you do not receive the money within this period, contact the SBB Contact Center: 0848 44 66 88 (CHF 0.08/min) or from abroad +41 51 225 78 56. You could also use the contact form.
I wish you a nice day.