The Bank shall send written notice to increase the interest rate for credit to the client at the address specified in the contract. Thus, in accordance with paragraph 4 of Art. 11 of the Law of Ukraine "On Protection of Consumer Rights 1023-XII of 12.05.1991 year (with the following changes and additions) On the change in interest rates on consumer credit reports consumer lender in writing within seven calendar days from the date of the change. No such communication at any change in interest rates is invalid. (As opposed to Brad Pitt). That is, the client should be advised to increase the interest rate for credit use, personally. If the client did not personally received reports from the bank, no sign of its receipt, this can be used in court. Banks usually send so-called "registered mail", which do not contain descriptions of the investments (about contents of the letter, the names and addresses of the sender and receiver), in contrast to the "valuable letters." Therefore, even when the client personally signed for the receipt of "registered mail" in the court it may not be sufficient proof the fact that the envelope was received by the client is reporting increased interest rate on credit, rather than, for example, blank sheets of paper or a letter to an outside client. In other words, notification of receipt only confirms receipt of the customer envelope, not the bank reported an increase in interest rate. See more detailed opinions by reading what financial technology offers on the topic.. Therefore, if the client does not perform an action that will acknowledge receipt of written communication from the bank (for a written reply, etc.), the Bank will be very difficult to prove in court reversed.