Delete a global customer object permanently. ⚠️ WARNING: This action is irreversible! This will delete the DeliveryLocation, Customer (if it's the only location), Contact, and OpeningHours. ⚠️ IMPORTANT: Use the DeliveryLocation ID (not Customer ID) to delete the object. If the Customer has other DeliveryLocations, only this location is deleted. If this is the last location for the Customer, the Customer is also deleted.