Some Tesla customers will have to wait longer to get a response from customer service due to a significant increase in vehicle deliveries, CEO Elon Musk said via Twitter on Wednesday.br "Due to a large increase in vehicle delivery volume in North America, Tesla customers may experience longer response times. Resolving this is our top priority," he said.br Tesla did not immediately respond to a request for comment on how long the extended response times will last or what percentage of customers may be affected.