flooded basement

Our basement recently flooded and we are not sure how to prevent it from happening again. We are desperate because the "waterproofing companies" all give different solutions (ie whatever product they are trying to sell).

Water came in 3 ways:

1) running in from slop sink

2) came in from cracks in concrete floor

3) seepage where the walls meet the floor

We do not want to put drain pipes around the basement interior because that will still allow the water to come in.

We know that we need a check valve for the slopsink but how do we prevent water coming in the floor (noticeable cracks) and walls (no noticeable cracks).

What kind of professional do we call to come look at it?

Thanks for any and all advice.