I need someone to update/enrich 4000 company addresses

I need somebody to take care about our addresses.
We will provide you an excel list with
around 3000 rows of company names with address.

You should
- check if the company still exists (using google maps / not found = does not exist)
- check if the address is still correct (using google maps) and/or correct it
- add the country to the address (always missing)
- add the website URL

Additional 1000 Addresses where we just have the Name, you should google them and
- check if the company still exists (using google maps / not found = does not exist)
- add the address (using google maps)
- add the country to the address (always missing)
- add the website URL

Must be done by 20 March 2019.

Example:
"A. Schweizer GmbH" - you can find this company in google maps and check the address and add the website for it.