Shipping parcels through the Post Office is a mess

I have ordered spares from the UK for a car that I am rebuilding. In total I had five parcels shipped through the Post Office. Zero communication from EMS International Mail Centre. Call centre does not work. When you go to EMS to try and get information, you are blocked by a security guard from Fidelity at the gate where there are no parking bays or any other facilities. When I eventually got in and requested to speak to the manager in charge, a guy in a T-shirt who would not identify himself other than \I am managing