Post Office – Carmarthen, Abergwili Mobile Service – Opening Hours & Branch Details Post Office is easily reached on In Front Of Ebenezer Chapel Pole No 7, approximately a 2.00 mile distance east of the centre of Carmarthen (close to Abergwili Vc Primary School and First Cymru Bus Depot). This branch is an added feature to the areas of Llangynnwr, Pensarn, Llangunnor, Capel Gwyn, Carmarthen and Abergwili. For the whole day (Friday), it is closed. Read the specifics on this page for Post Office Carmarthen, Abergwili Mobile Service, including the hours of business, address, direct phone and further pertinent details.