檢察官蒂姆-埃文斯（Tim Evans）說，分局長將這次突襲描述為 "絕對可怕"，並造成了 "相當大的破壞 "的場景。
Czernozekow在給判刑法官尼古拉斯-巴克（Nicholas Barker）的信中寫道："我現在毀了我自己的生活，失去了我的家庭，"巴克稱這封信是 "發自內心和體貼的"。
A robber who stormed a Post Office and threatened a lone worker with a hammer before escaping with £380 has been jailed.
Paul Czernozekow, 42, brandished the weapon and smashed the counter screen up to 20 times at the store in Haverigg, Cumbria, on 26 May.
He had demanded money from the sub-postmaster and then smashed the counter screen multiple times.
The sub-postmaster ducked away from the screen, activated an alarm and fled to a private storage area of the Post Office and held the door shut.
Czernozekow, of King Street, Millom, was seen on CCTV jumping over the counter and escaping with 380 one-pound coins.
Prosecuting, Tim Evans said the sub-postmaster described the raid as "absolutely terrifying" and had caused "a scene of considerable destruction".
The court heard how Czernozekow went on to burgle a Tesco store in Millom on 12 June before he was eventually arrested in the East Midlands.
Czernozekow also pleaded guilty to five burglaries and five thefts at an Asda store in Derbyshire between 25 July and 18 August.
The court heard how, after a spate of crime and drug abuse more than a decade ago, Czernozekow had moved to Cumbria and turned his life around.
However, he began taking opiate painkillers following a gym accident and relapsed into heroin use and offending.
"I've now ruined my own life and lost my family," Czernozekow wrote in a letter to sentencing Judge Nicholas Barker who called the note "heartfelt and thoughtful".