Did Turkey recognize the Polish government-in exile
Yes, but only till 25.08. 1945, after communists had formed their own government in Nazi-free Soviet-occupied Poland.
Did Turkey accept any Polish refugees
Probably yes, there is nothing in sources they didn`t accept refugees. But those were individual cases compared to mass emigration to Iran, India, New Zealand and Mexico.
Did Turkey issue any diplomatic statements during the German-Soviet invasion
hahaha How should we know??? You need to ask in the Turkish forum...... probably they did but it was in accordance with their neutrality, so meaningless and that is why we know nothing about it in Poland. If they had condemned the USSR, then Polish politicians and then historians would play their trumpet about it for decades.