UNHAPPY online purchase and customer service

So unhappy with the online system and customer service. I ordered a voucher with delivery date 7 Dec(voucher gets emailed) voucher was not received on the 7th, i sent three different emails on 7th with no response. Called this morning and was told it would be escalated to IT and I would receive the voucher. Have called again two hours later to be told that there was a problem with the voucher and IT was looking into it. The reason for the online purchase was so that I received it by email immediately as its a gift, nobody bothers letting me know there is a problem and I cant give me customer the voucher because I havent received it! VERY UNHAPPY