Arrived back from holiday during heavy rain showers. The airport was only able to provide steps for the rear of the aircraft. Service staff sheltered under the wing of the plane as passengers alighted on to waiting buses. Although the bus was parked close to the wing our route was hindered by the positioning of the staff forcing us to walk under the wing close to the engine. When on bus we waited for a passenger who required assistance unfortunately for that passenger, who had clear mobility issues, they had to assist themselves down the wet aircraft steps whilst the person deployed to assist them watched their descent from the tarmac. As we waited for the bus doors to close the driver had to to personally hammer the a panel by the rear door with his bare fists before it would close. As the bus moved towards the terminal building it was noted that the aircraft was chocked at the front of the wheels but not at the rear. Once inside the baggage hall we all waited patiently for luggage to arrive. We couldn't help but notice that the person providing assistance totally ignored the passenger he was supposed to be assisting opting to stand beside them In silence. We were pleased to see our cases arrive. Unfortunately one was damaged. When we tried to report the damage to the person standing by baggage enquiries they directed us to Swissport service desk outside the baggage hall. While trying to find the Swissport desk we decided to ask an airport employee. They were unable to help as they had only worked at the airport for two months and they were "only a worker". We then noticed the service desk a few yards away tucked in a corner. Despite three staff being on duty only one was dealing with the queue to report damaged luggage from the same flight.The Swissport agent took the details of the damage after initially getting upset when we insisted on taking a photograph of the damage. He provided a reference number advising that we would have to claim for the damage from our travel operator as Swissport were only the handling agents and not responsible for any damage caused when they off loaded the case. I could go on but in short this was the first and last time we will use Edinburgh "International Airport" based upon their attitudes towards airfield security, health and safety and dismal customer service skills.