I have been a regular (ie every couple of weeks) customer of this premises for a few years and have always enjoyed the food and as a lunchtime experience loved the fact that I could be in and out within 30 minutes, pay the same amount as I would for coffee and a stodgy sandwich (from the numerous shops providing same around town) but would go away sated and satisifed that I had something much tastier and hopefully much healthier. My issue with this restaurant is that after all my frequent visits I decided last November to call in to them to see if they did vouchers as i wanted to get one as a welcome gift for someone new who started in our organisation recently and I was aware that she loved sushi. The manager wasn't there when I went in (obviously after all my visits I knew who she was) so I met with a member of staff that I didn't recall seeing before and asked her if they did vouchers, initially she wan't sure, but then obviously found a pack of voucher slips under her desk and produced one. I asked if I could pruchase one for 20 euro and she said that was fine and asked me to sign it, I paid the 20 euro for it and left. Gave the voucher to work colleague and she was delighted. Couple of months later said colleague went to this restaurant with the voucher and when she went to pay they told her they couldn't accept it as it hadn't been stamped, she protested so they told her to wait for the manager. Eventually the manager appeared and said she wouldn't accept the voucher as it hadn't been stamped. My colleague came back in to work and embarrased and upset by the situation told me what happened, I was mortified but said I go there all the time and they know me I will go down to the restaurant and sort it out. Upshot was the manager who knew me very well as a frequent customer told me she wouldn't accept the voucher as it wasn't stamped . I argued that obviously the person who sold it to me didnt stamp it by mistake and how else would i have it in my possession and she inferred that it was either stolen or given to me by someone outside the restaurant fraudelently. The arguement went on and she brought out the members of staff who were working there that day and asked them (in her native language - japenese or looking at trip advisor reviews apparently staff are Chinese) and then said none of these people sold you this voucher. I argued how could they remember and she said if they didn't stamp it it wasn't valid and none of them remembered meeting me. I said that maybe then it was a person who no longer worked in the place but she said she hadn't changed staff for a number of months. I said are you accusing me of stealing the voucher and she shrugged her shoulders. Anyway suffice to say she was unyielding, cold and accusatory and unfortunately as I had paid in cash i had no way of proving otherwise. We had a heated argument but she wouldn't relent and told me to contact the guards if I was that upset about it..I said the guards have more than enough to do and she just smirked and turned away...I bawled her out of it for her instransigence and her accustaory tone but to no avail. Anyway, I am still disgusted by her attitude especially as a long time customer and to be left feeling like some sort of criminial and the embarrassment I endured as did my colleague. Look up trip advisor..they are great until something goes wrong and then you will see their complete disregard for customer service. Will never ever step inside their door again. Btw, much better Japenese restaurant in Georges Quay with far better sushi, more authentic japanese dishes and much more attractve surroundings, and also incredibly attentive and polite staff (which was never obvious in Tackyitchy!).