Which CRM for a workflow process?

Hi,we are looking for a solution for implementing our marketing process. I've already taken a look at a couple of solutions but was not satisfied so far.

Our process looks as following:

We have a customer base with several attributes for each customer like city, type of product, segment and so on.It should be possible for the manager to choose the correct customers according to the attributes (e.g. all customer from city x and type y of product) and assign this customers to a marketing process.

The marketing process would look like:

1. User gets a notification call customer x
2. User is being asked how the call was and the user can choose from several categories (no interest, slight interest, wrong number, ….)
3. The logic behind what happens afterwards is in the program

In short:

Defining the customer range -> putting them into a process -> user gives a response in a pre defined way to the task he performed -> the process goes on

For the above described process which solution/CRM would you guys suggest?

I am a bit struggling with the overall amount of solutions present on the market.

Thank you!

Workflow as a diagram:

https://imgur.com/X5ZLuWz