Google Maps problem - Google keeps changing our address - Need someone to investigate

We have an ongoing Google Places or Google Biz location problem.

Despite multiple requests and authorisations google keeps changing our address on line and on it's maps.

This results in customers going to the wrong address.

We keep changing it. But it sticks for about a week then a new different address pops up.

If you click on https://www.google.co.uk/search?sourceid=chrome-psyapi2&ion=1&espv=2&ie=UTF-8&q=capability%20event%20address

the address brought up is Manor Farm House, Lower Ln, Kinsham, Tewkesbury, Gloucestershire GL20 6AT

This is not our address - It should be Manor Farm, Longdon, Tewkesbury, Gloucestershire. GL20 6AT

Somewhere - there is a problem. This has been going on for more than a year.

We have done the little postcards - even had a call from a google rep to check our address. Moved the pin. Corrected the address. Nothing seems to stick.

The correct address is on our website - http://www.capabilityevents.co.uk/contact/ and is at the foot of every page.

Google + is incorrect - Have changed it multiple times.

I need someone who can work this out.

Where is Google getting this incorrect info from. Remember the address currently showing has no relation to us - a few months ago Google had us in Cambridge. There seems to be no logic to it at all.

I have no idea how long this will take you - only that you may need to monitor this for a while after. I have guested on the budget.

You will need to come up with some other solution other than the ones we have already tried multiple times.

These are:-

1. Change the pin - moved the pin
2. reported the inaccuracy and corrected it.
3. Updated and corrected via Google Webmaster
4. Updated and corrected via Google +
5. Updated and corrected via Google places (or whatever this is called now)
6. Reported it to google and received an address conformation card with pin - Done this multiple times.

Any ideas?