I don't believe that Von's is likely to be liable unless you can show that they were somehow negligent in how they managed their carts, and that the negligence somehow was related to damage done to your property. Certainly, if you suffered damage, call you insurance company, and ask them for help. If Von's is ultimately responsible, your insurance company will involve them.
The above is not intended to be legal advice, but may be used for general information. Please contact an attorney for specific help tailored to your needs. www.figgardenlaw.com