Shoppers at the Tesco Extra store in Cleethorpes reported traffic chaos after a taxi broke down.
Gridlock was reported in the store's car park on Saturday afternoon.
It is thought a broken down taxi caused traffic to back up.
Some customers reported two hour waits to get out of the car park
Police were called to help manage traffic as tempers frayed.
MANAGEMENT at Tesco have apologised for delays to customers as they tried to exit the Hewitt's Circus store in Cleethorpes yesterday.
A broken down taxi blocked the only exit to the store causing gridlock.
Darren Woodhouse, a customer services manager, said the female driver of the taxi had refused offers to help removed the vehicle after it broke down at around 3.30pm.
Mr Woodhouse said: "She was worried moving the vehicle might damage it. Because of where it broke down it caused a backlog of traffic.
"We had to call the police to see if they could use their authority over the driver. It was moved and we were able to get the traffic moving again."
He added: "On behalf of Tesco I wish to offer our absolute apologies. It was out of our control."
A mother named Charlotte tweeted from the scene: "Sat in your gridlocked carpark in Cleethorpes for over two hours in the heat with my two year old child. No one member of staff visible."
MattyK tweeted: "Cleethorpes Tesco it's busy inside, but it's carnage in the carpark."
Were you caught up in the incident? Email newsdesk@grimsbytelegraph.co.uk
