Discreptancy in number of clicks
When I check my client's transaction history, I often encounter a situation where the number of clicks for a given date (e.g. 16 May) will be listed differently the following day. To explain:
Assume that I check the transaction history on 17 May. The number of clicks for 16 May is then shown as 2. When I check again on 18 May, the number of clicks for 16 May is then listed as 6.
Of course the cost is not the same and the balance I gave the client on 17 May is also incorrect. I specialize in AdWords for micro businesses who are all on manual payments and this causes not only confusion but also mistrust among my clients.
Why does this happen? Is there a way to overcome this?