M : Hmm...Didn't you change your phone only two months ago? What's the reason you've got this new phone?
Could be "you have [=possess"] or "you have obtained/bought/received". If the latter were intended, it would be more likely as "you got".
W:Do you know why? It was free. The company held a special event for customers.
M: I don't buy it. I cannot accept/understand that explanation.
Student or Learner