Banner with the logo of the Polish Oil and Gas Company PGNiGWARSAW, Jan 14 Gazprom via the court demands an increase in the price of gas for Poland, the Polish gas monopoly PGNiG said in a statement. under the Yamal contract,» the message reads. » «expects that the contract price will be increased retroactively, as part of Gazprom's renegotiation requests dated December 8, 2017 and November 9, 2020.» but unreasonable.» “We are ready to demonstrate this in the Arbitration Court,” he said. “PGNiG continues to work towards changing the price conditions for natural gas supplies sold under the Yamal contract. on the reduction of the contract price of November 1, 2017 and November 1, 2020, and in the context of record high gas prices in Europe,» Mayevsky was quoted by the PGNiG press service.Gas prices in Europe will remain high until spring 2022, PGNiG says