A "Man With Van", who transports items for profit in Tenerife has to possess a special licence and insurance before he can do it legally. (Hefty on-the-spot fines are issued if anyone is caught without the necessary paperwork.)
The point is, you just can't ask anyone who happens to have a van.
I'm afraid I can't help you personally, but, as well as appearing on my site, your question is also on the site's Facebook and Twitter pages, so maybe someone will respond.
Similarly, you could join the Tenerife Forum and ask your question there.