Why is it tego psa? Isn't a direct object in a negotiation supposed to be in genitiv?
Yes. And it is.
It's just that "pies" is masculine animate, and such nouns have the Genitive and Accusative forms identical.
this lady's pronunciation is still broken :( she says 'ps-a' instead of 'psa'
Yes. I thought that was how it was supposed to be said until I heard the male voice pronouncing it.