As @kezo says, it’s always better to travel around to dealerships rather than phone them. Many dealerships won’t take phone enquiries seriously and if you are actually in the dealership they will always be more receptive.
I know nothing about towing, but the range limitations of EVs are enough to put me off when you haven’t got anything behind you! As @JMC says, have you done your research? Range is likely to be dire and I’ve no idea how problematic trying to charge a car whilst towing is!