I have the same problem
I have had emails from, I calculate, nine other people with the same name as me. Those emails have been from the NHS (UK), Australian companies that make and maintain the sails, ropes, lights and radios on yachts, prescription glass companies (UK and Canada), flights (internal UK and internal Australia), job offers (London, Bristol, Cardiff (UK), Perth (Aus) and Toronto (Can)), legal proceedings concerning car crashes, house sales, house purchases, apartment rentals, wills and compensations for unfair dismissals (all UK). I have had new job contracts, notifications of payments for one off contract jobs, wages and other similar regular payment details. And so on and so forth.
The worst people I have ever had to deal with in terms of getting them to contact the correct person and obtain the correct email details have been estate agents, especially ones in London. I actually had to phone one very annoying lady in a London agency and explain to her how the Gmail email addressing system works after she accused me of stealing, yes stealing, all the gmail address' associated with my combination of first name and surname. It was only after speaking to her boss that the boss was able to get her subordinate to accept that the email address that they had for a very promising client was wrong. Not fake, I always stress that (even more so since President Trump came to power) just wrong. The best ones to contact have been solicitors and other legal offices. They always apologise, clarify that they have indeed been given the wrong email address, ask me politely, very politely, to delete the emails and notify them immediately if I receive any other communications from parties in the proceedings before they can change the email address.
I have been called by several of the people who have got their email address' wrong over the years. They have all been adamant at the beginning that it is me who is up to no good and I have been accused of hacking so many times I have lost count. When I explain to them that I think I was the first person to use that combination of names to get a Gmail address and didn't use any other letters or numbers and explain to them how, by their forgetting to include what ever other character or number, the emails will come to me, they start to understand. One man even phoned me to apologise after I had been sent the details of not one, but six, medical related issues in the space of about ten days and after I had contacted each and every sender apparently one them had contacted him and pointed out, in no uncertain terms, not only the issues he had left himself open too medically speaking but also the various legal issues that could of arisen from his mistake. Alas that man still makes the occasional mistake but those are confined to getting his car serviced and or washed these days.