Is he have any reason to charge me DUI but I’m not driving in the first place? And is there any way I could fight this in court?

So a few nights ago my friends and I went out to a club. We left the club around 2. On our way back we stopped at a store to get food and something to drink. When I got out of the car I was told by my friend that the store clerk had called the cops and told me that I was drinking and driving. At this time the car was parked in the parking lot locked and everything. When the cop arrived they questioned the clerk. The clerk had told them that my friend with me was the one driving. Then once the officer had talked to my friend and told him this he asked the clerk again and she stated that I was the one driving when I wasn’t. I knew I had drinking that’s why I didn’t drive. Once we got to the store we parked the car and asked the clerk lady before she had called the cops. How long we could leave the car parked in the parking lot before it would be towed she told us 24 hours. Before the second officer had arrived their was another one that I had already talked to asking where there was a hotel at that was nearby that I could stay at and he pointed me in a direction. Once I was on my way to the hotel that is when the cop stopped us and questioned us. He then arrested me because I refused to do a sobriety test on the spot.