Can a customer sue for poor performance?

Question

Law in IT

The customer has made adjustments. I have fulfilled them. I was paid to Sberbank Online from a personal account to a personal account (because taxation allows). After a few weeks, the client found the jambs and said that I had to fulfill them (although these are not jambs, but whims). I refused. He promised to write a statement to the police for "poorly performed services." Can it? There was no agreement.

Answer 1

I propose to troll this customer like this:
tell him that you will go to the police with the accusation that he is blackmailing you
and that you recorded his threats

Answer 2

He can write about anything, even the fact that you stole a Snickers from him.
But whether the court will accept it or not, and whether it will satisfy it or not, the court decides.
IMHO in your case, I think vryatli. There is no piece of paper (agreement) in our bureaucratic country - it means you (in this case, he) - nobody

Answer 3

Anything can be written. But the police will look at him as a complete moron and send him to court (or on an erotic journey on foot :) )
And in court he will need to write a lawsuit - which is not as simple as it seems, because it must be written in a special dialect office, called "judicial language", which is not at all easy to write if you yourself are not a lawyer, not a lawyer, not a judge :) That is, he will most likely have to hire someone for money. You will have to pay court fees. The claim will have to be filed according to the general rule - at the place of registration of the defendant.
Naturally, it will take money and time to attend court hearings, where you will have to prove that the work was done at all (since there is no contract), that it was work for money, and not just volunteer help, etc.

Answer 4

Maybe, but it will be just words.
Always require a paper/message from the customer (depending on the form of your interaction) about the acceptance of the work.
All the shortcomings after that already become his problem. And to demand something in a few weeks is completely beyond reasonable.

Answer 5

There are no prospects for the customer.

Answer 6

Write something can prove - no.
It makes sense for him to file a lawsuit only with the results of an independent examination . In this case, you can ask the court to conduct a second examination.
If the issue price is not > 1 million rubles. there is nothing to talk about here at all. 100%.
PS The police do not deal with disputes arising from civil law relations, and this is exactly what they are.