Where are the complaints in Privatbank?

The story is long

Once I went to Privatbank to reissue a scholarship card instead of a broken one. I waited two weeks, I came to the department on day and hour H and asked to give me a card. They answer me - "Not a question, but you will still need to get a piggy bank card." Everything is fine, but I already have two such cards at home - from past re-releases.

Dialogue with C (employee) of Privat:

Me: No thanks, I already have 2 at home.
S: I don’t know anything, I’m supposed to receive it.
Me: But I have 2 and I do not use them.
S: I don’t know anything, get a piggy bank or I won’t give you a student one.
Me: Where is it written that I must receive it?
S: This is because you have lost your card 2 times already.

After that, I begin to panic and get angry.

Me: And if I do not get a student, where can I get money from a scholarship?
C: At a bank branch upon presentation of a passport.

Carrying a passport and a lot of cash in my pocket is not part of my plans, but here an employee finishes me:

S: By the way, the amount of 50 UAH is charged to the student every month and credited to the piggy bank.
Me: Can they be removed right away?
S: No, only six months later.
Me: Can I close the piggy bank?
S: Yes, six months later.

I doomedly sign the papers, get my card and rub the piggy bank and go home. In the minibus I read all the papers to the end and find out that I can close the piggy bank even now. 2 hours of time has already been spent.

I’m calling home from the support service, they confirm that the piggy bank can be closed even now and it’s generally strange that they give it to me without my consent.

I fly to the bank branch, beautifully throw papers and a card with the cry “Close it!” Onto the table. He says to me "You can’t, I’ve been burning." I explain to him already with foam at the mouth that he is three times wrong. He sighs and picks up my papers, closes the card and gives it to me. I'm leaving.

History is average

It became very disappointing that I was simply deceived and I spent 3 times more time than I was going to.
I call the support service (SP):

Me: Hello, I am so-and-so, I want to complain blah blah.
SP: It’s not a question, I’m sending an application for the conveyor. The application number is such and such.
Me: When will something be known?
SP: You will be called back.
Me: OK, thanks.

A month passes. I'm calling:

Me: Good afternoon, I am so-and-so, I left such-and-such an application.
SP: Your application is not.
Me: How not?
SP: No, that's it.
Me: I have not received a call.
<hang up>

I called again, and then again, my applications went nowhere.

The story is short and instructive.

I visited a friend not so long ago; his girlfriend works in the CreditDnepr support service. Told a story.
She laughed and said:

- They practically do not consider complaints, but about employees in general.

And then I realized that there is nowhere to seek justice, except to send them a complaint in a letter and then sue :(

Has anyone encountered such horrors?

UPD:

2 hours after publication, they called from Privat and said that they would sort it out. Asked to say dates, etc. They will call back tomorrow and it will be clear what is next. Keep track of developments.