Apple had similar growing pains with their service. When you are posting 50% growth rates, a huge percentage of your staff are new hires and trainees. Often you can't hiring and facilities growth lags behind sales.But...some are really improving. Volvo, for example, in several countries has set fix commissions with MFR doing OTA updates, and doing some customer service directly. A number of others are doing similar efforts, with highly variable success. My XC 40 Recharge buying experience was superior to my Model S Plaid experience, the two made within a couple of months apart. Tesla definitely needs improvement.
They do need improvement. Just sort of par for the course with the sort of growth we're seeing though.
Fortunately I think the cars mostly speak for themselves and don't need a ton of service.