Sql query help

[jason greenwood]

Good evening,
I'm hoping someone can assist me with this one as I'm tearing my hair out.
I've got an invoice table where I want to be able to pull from 3 different tables, company_id, child, and leaders. They are all linked by company name.
I've written the following which brings back data which appears to multiply itself for child and leaders results.
If I do this query just on the child or leader it works perfectly it's just when they are both together it gives me weird results.
Many thanks for taking time to look at this for me.

SELECT
company_id.Company_name,
COUNT(child.Counting) AS `COUNT(Counting)`,
FROM company_id
INNER JOIN child ON company_id.Company_name = child.company
GROUP BY company_id.Company_name,