Heritage Hyundai Towson

A oil change should not take two and a half hrs to do. Every thing else was fine

I purchased my very first car here in 2016 along with Car Care and Term Care (the rep told me I would not have to worry about anything). I have only been coming here for maintenance since my purchase and have trusted the expertise of the mechanics without question. During this visit, I did not have any issues scheduling and dropping off my car. My experience turned sour when I was told on the phone that I needed a new cabin air filter, engine air filter, brake fluid exchange and alignment. This did not sound right because I just changed the cabin air filter by myself 2 days prior and I barely drove since the last service check 6 months ago due to working from home. I told the representative that I changed the cabin air filter recently and don't understand why I needed a new one. After a long pause, he couldn't answer me. I was told to come back to pick up my car.
Upon returning, the rep told me that, the mechanic must have thought I needed a new cabin air filter because my engine filter was dirty. Huh? This did not sit well with me because I really couldn't tell if my car was serviced and checked in the past 4 years as it's clear and a fact that the mechanic did not check my filter but yet told me it's dirty. This might be a small error but what if there are other underlying issues with my car but the mechanic did not check thoroughly?
In addition, I asked the reps if term care covered the other deficiencies and they said no and confidently told me that my policy expired in July 2020. This is where I started to heat up because I came here 6 months ago (before my policy expired) and drove less than 2k miles in the past 6-7 months but why all of a sudden these issues. I further inquired why I needed these additional services NOW and not 6 months ago. I was told that the brake fluid exchange should be done either 3 years or 30k miles, while I have driven less than 25k miles, I made the 3 year mark. I had to call them out and told them that I purchased the 2017 Elantra in 2016 and the 3 year mark would have been July 2019. When I asked them how come they did not tell me this last year or even beginning of this year, they were once again speechless. I paid around $1200 extra for term care but not once did the service center suggest issues that would be covered (they didn't even change my wiper blades when it's streaking across my windshield) but tells me all these issues after it has expired. Definitely fishy on top of the deficient maintenance check.
In the past, I have spoken highly of Heritage Hyundai Towson dealership and service, and have recommended the place to my friends and colleagues. I honestly don't think I can anymore. I currently feel cheated because I paid so much for no reason and feel unsafe while driving because I honestly don't know if the mechanic cut other corners during the maintenance/service check. Not cool.