he was made a British citizen in 1949 but passport says born in poland
Doesn't matter: he lost his Polish citizenship under the then binding Polish law, specifically Article 11 of the Act on Polish citizenship dated January 20, 1920, Dziennik Ustaw - rok 1920, nr 7, poz. 44 (Journal of Laws, 1920 year, No 7, item 44):
Art. 11. Loss of [Polish] citizenship happens by:
1) obtaining another country's citizenship;
cklawoffice/polish-citizenship-law.html#1
for the second question yes i have tried but the local office will not even give me a interview.
a) There is no interview involved, it can all be done by post if you want it to be.
b) They don't actually get to make any decisions on this: as an EU citizen you have the right to reside in Poland (unless you are a clear and present threat to the national security of or public order in Poland).
I'd suggest you write to the relevant office and ask them to specify the legal basis on which they refuse to issue you with confirmation of your right to reside in Poland.