That's what I normally do too, but decided to take the risk here given the difficulty in communicating with Tesla. I know someone who lost a 6 figure sum to fraudsters who swapped a solicitor's bank details for their own. Anyway, best I could do here was write down the details as soon as I saw them, and compare those details with the printout I took to the bank just in case someone had somehow tampered with my printout on the way. The huge sums involved (e.g. 4000 buyers transferring £50K each), and the poor communication from Tesla, isn't a great combination.