Business ProfileforCool Air Mechanical

I purchased two A/C and Heating units for $24,000.00 installed by Cool-Air Mechanical. On 9/15/2023 I purchased a preventative maintenance agreement for the two systems which includes annual furnace and A/C tune-*** and would cover two years per the attached invoice. I schedule the first service for the furnace checkup that happened 6 weeks later on Friday, 10/27 and became concerned when I noticed that the filters being installed were undersized and would allow a significant amount of intake air to go around the filter. When I questioned the technician, he said that it was the size he was told by the office to install. But installing undersized filters will cause issues in the future that I will have to pay extra for. So, I called the office and was told that they would have the technician bring by the correct filters later that day or the next morning on Saturday before 3:00pm. They called on Saturday saying they would send someone on Sunday morning between 8:00 and 10:00am. I called at 10:00am and got a call from another technician who let me know he would submit my request to the office on Monday. He said, "I am not going out to purchase and deliver filters on a Sunday because it is not an emergency." A different technician calls a couple of hours later and says he is on his way with the filters, but he arrives with the same ones that are the wrong size. He acknowledges that they are the wrong size and says he will return with the right ones on Monday morning. I follow-up with him on Monday via text and was told I would now receive on Tuesday morning (text messages available for review). After not receiving, I call the office and request a refund for the service. I was told that someone would call be back to discuss, which as of today (Friday, 11/3/23) has not happened. I am filing this complaint because as soon as I mentioned refund my follow-up calls from my phone are not being answered and I am getting no response to my follow-up email.