YOTA - connection between subscribers, is this a bug ??

Question

Yota

In general, the essence of the situation, I call the phone number, there are beeps, then the counter on the phone went, supposedly they picked up the phone, the counter goes up to about 20, the man answers. Says - I'm sorry, it seems I did not get there.
After 20 minutes, the subscriber I called appears in physical access and says and shows that: THERE WAS a call from my number, but at a different time, where another person spoke.
How to take it?

Answer 1

Hello!
The situation is indeed very strange and unusual.
We will be grateful if you describe it and specify your number and the number to which you made the call in the personal messages of our VKontakte group vk.me/yota
We will check everything!

Answer 2

Network or phone error.