NetFlorist, failing to perform their sole service!

As you know Valentine's day was 2 weeks ago and I, being far away from my loved one, turned to NetFlorist to have a gift delivered for this special day. Even though I specifically requested it to be delivered on the 14th February, Valentine's day, they decided to deliver it on the 13th February, which is in fact NOT Valentine's day! The next day I sent NetFlorist an email explaining my utter disappointment, to which they rep**** by offering me a voucher to the value of my purchase, willing to give them another chance (seeing as it would be at their expense) I accepted the voucher. However to this day I have not received this voucher, despite me sending them an email (yet again) to follow up, to which they rep**** by saying that "my request has been submitted"... What request?! They offered me the voucher!! In short; NetFlorist severely disappointed me! What a joke! Won't ever recommend them to anyone again!