"I have earlier seen lots of prime ministers in my career. I was a Union minister... I have served under many prime ministers. But the person on the Prime Minister's chair is the most unfit," she said at a rally here on Tuesday.
Banerjee alleged that Modi did not know basic political courtesies and does not know "a trace" of Bengali culture.
"Just see what language he (Modi) uses for his opponents. He does not have basic political courtesies. He cannot respect any culture. He does not know a trace of Bengali culture. He thinks that everyone is his servant," the TMC supremo said.
On Monday, Modi had claimed that 40 TMC MLAs were in touch with him and there was nothing that could save Banerjee.
"Didi, on May 23, when the results will come, the lotus will bloom everywhere and your MLAs will leave you. Didi, your 40 MLAs are in contact with me even now," he had said at a public meeting in Serampore.
"He (Modi) has captured the media and the institutions. The Constitution has been altered by him. Under the BJP government, lynching incidents have witnessed a sharp rise," she said.
"Those who earlier used to run around in khaki pants are now distributing money to people," the Chief Minister said while charging BJP with indulging in corruption during elections.
Countering BJP's claim that she did not respect Hinduism, Banerjee said that her party believed in the teachings of Hinduism preached by Ramakrishna Paramahamsa and Swami Vivekananda.
"We believe in Hinduism preached by Ramakrishna Paramahamsa and Swami Vivekananda. We worship Durga, Laxmi, Kali and Saraswati. But, I don't believe in Modi's Hinduism. He does not understand Hinduism," she said.
The TMC leader underlined that Hinduism preaches tolerance, promotes harmony and universal brotherhood.
"When Narendra Modi comes to Bengal, he tells to the people that TMC does not allow Saraswati Puja and Durga Puja to be celebrated. Let me tell one thing to Modi, go and visit any place of worship here... people of all faiths celebrate their festivals harmoniously and live in harmony in Bengal," Banerjee said.
On Tuesday, she had claimed that BJP hired "agencies" to bring crowds to Modi's rallies in exchange for money.
"The BJP is spending extensively. We do not have money power like them. They are spending crores of rupees on every public meeting. They have hired agencies to put up flags and banner. They have been hired agencies to bring crowds to Modi's rallies in exchange for money," she said at a public meeting in Howrah.
Four phases of the Lok Sabha polls have already taken place in West Bengal, where 42 seats are at stake.
The remaining three phases of polling are scheduled for May 6, 12 and 19. Counting of votes will take place on May 23.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)