BMW of Towson

I bought a vehicle from BMW of Towson back in June. I purchased a tire and wheel warranty at the time of my purchase. I was told that I could cancel the warranty and receive a refund within 6 months of canceling if I chose to do so. I canceled the warranty a few weeks after the purchase. The BMW warranty office confirmed that the warranty was canceled and sent to BMW of Towson back in July so they could give me the $3,100 refund. It’s been over 90 days and no refund. The worst thing is that I can’t get any correspondence from them about the status or exactly what the issue is. They are not returning emails or phone calls.