Evri complaint: Noisy driver disturbing our work – complaint being handled by a bot! !

We live at the end of a long cul-de-sac with a turning in front of our house. With access to so many houses, Evri delivers about 5 days every week. The driver plays his music incredibly loud with a thumping bass. He parks in the turning (right outside where both my partner and I work), leaves his engine running and his door open while he delivers to as many as three different houses. We have asked him on several occasions to turn his music down and he has been very rude and hostile. I started a complaint with Evri and they have asked for CCTV footage and requested that this was shared via Google documents. I explained we don’t have CCTV – just videos we have taken on our phones and shared them via Google documents. I received an email from them saying that they couldn’t access the videos – but with no suggestion of how else to upload them. I put them on Dropbox and shared a link and again received an email saying they couldn’t access them. It has just occurred to me that all the emails are rather similar and that maybe my complaint is being dealt with by a bot rather than a human being which is infuriating. I have no idea how to proceed now so any advice would be gratefully received. The only thing I can do at the moment is email any retailers I may purchase from to check whether they use Evri and request an alternative.