The best restaurants serving Greek food in Monmouthshire South Wales

We booked a table for 4 people using a Groupon voucher for Saturday 13 April 2024. I phoned to book a table on the 7th of March. When we arrived at the restaurant it was closed. A sign on the door said it was closed for 4 to 6 months for a renovation. We had not been contacted at all and we're forced to go elsewhere. I tried to contact them by phone and SMS but no reply.