You also have a right to use Welsh with other people in Wales who also wish to use Welsh with you, either orally or in writing.
Under Part 6 of the Welsh Language (Wales) Measure 2011, if two or more people want to use Welsh with each other, it is against the law for anyone to intervene or interfere in any way to prevent that. Intervening can mean asking you not to use the language, saying that you will be at a disadvantage for using Welsh or causing you to be at a disadvantage for doing so.
If you believe that someone has interfered with your right to use Welsh, you can complain to the Welsh Language Commissioner:
0345 603 3221 or