Frustrated customers of under-fire delivery firm Evri have resorted to desperate measures to get their parcels as calls grow for an investigation into the company. She asked: “Does the Prime Minister believe that over 40,000 interactions by either social media, email or letter regarding the poor customer service and working conditions at the delivery company Evri warrants an investigation by the relevant Government department? Evri has apologised to customers across the UK who are still waiting for delayed Christmas deliveries.