Central locking no longer works

Hello you guys out there, maybe one of you had some advice for me I was shopping yesterday, and I parked my car in the parking lot. I could lock it up quite normally. When I wanted to put the shopping in the car, the central lock didn’t open 🙁 add that I can’t get the trunk on either. Can someone help me? Somehow I have to get the car from the parking lot because I’m dependent on the car 🙁 lg and a lot of Thanks already in advance