How to evaluate the effectiveness of Yandex.Direct if the contractor does not provide access to the company?

Question

Search Engine Optimization

When asked to give access, they said that there are a lot of companies on this account and we will see them all, they did this in order to increase turnover and, accordingly, get a bigger discount. They made us a couple of screenshots, sent us an unloading in Excel. The question is, what to ask them to screen for that matter? Or what should be in excel? Or maybe even send them with the same approach?
PS. Advertising budget 50t.r. per month

Answer 1

Better of course go to those who will give access. But there is an alternative - link your Yandex.Metrica account to Yandex.Direct and get access to Yandex.Metrica. It's even better than access to Direct. True, here, too, the agency should give you access, but to Metrica.

Answer 2

companies can be rummaged through other accounts, this is a standard feature to show the client

Answer 3

For good money, you can evaluate by screenshots. constantly ask for screenshots, let them see what you need for work.