Dziadzia / Babcia - help me with spelling/pronunciation

Both my grandmothers were Polish. We called one Babci and the other "other bobci" or ?ginka? bobci. Is that the correct term?

I was always taught to call mine Babcia (Bahb Cha) and Dziadzio (Dgeh Ah Zee Oh).

My mom was born in Poland but my dad is British and did not want my mom to teach my brothers and I Polish saying "You are in Canada now. Speak English only"... (Ya odd we also don't know French so we are not Bilingual thanks to my dad...)