I have a debit to my credit card account of €90 on the 31st May. I believe it corresponds to 2 tickets for a concert (Hofburg?) sometime during my stay in Vienna.(23rd.June to 2nd July 2018) But I never received the voucher (I've checked the spam). Can you please locate this debit through my email, and send me the corresponding Voucher. Or do you need further details?
Please let me know what is the best procedure. If you send me a phone number I can contact you by, could be easier if you need further details.