HYUNDAI STRITJOM PARK APPALLING SERVICE

I took my car for a service on Friday 9th February 2018, when I collected the car the manager there went in the car first and he noticed that the mats were dirty and he took them out to clean them and I saw him showing the employees there and also displaying that he was not happy. Previously I had noticed that the front tyre was not holding tyre pressure for long and I took it to a service station to check but they could not find out what was wrong with it. I did not use the car the whole weekend. On Monday morning, I noticed that the tyre was flat, I took the car to a service station and they informed me that the rim of the tyre was bent a little bit and that is where the pressure was coming from. I was informed when I picked up the car from a service that they checked the the tyres and the pressure and they were fine. I spoke to the manager about the situation and their lack of taking responsibility is appalling, had the tyre pressure been depleted whilst I was driving it would have been another situation. They are not thorough when they are doing a service.