"This complete denial of reality is doing great damage to the worldwide standing of a government which, until recently, benefited from huge good will", he said, calling on authorities to allow his office access to investigate the situation in the country.
"The two refugees camps we are in are beyond overcrowded", said United Nations refugee agency spokeswoman Vivian Tan.
That has left tens of thousands of new arrivals with nowhere to shelter from the monsoon rains.
Most have walked for days and the United Nations says many are sick, exhausted and in desperate need of shelter, food and water.
Around 3,13,000 Rohingya refugees have arrived in the last two weeks, pushing the number of Rohingyas living in this country to over 6,00,000. An Associated Press reporter witnessed hundreds streaming through the border at Shah Puri Dwip on Wednesday.
"Tomorrow we are expecting an airlift of relief supplies for 20,000 people", Tan said.
Foreign Minister AH Mahmood Ali made the call when he briefed Dhaka-based diplomats in three phases on Sunday and Monday about the ongoing situation related to the influx of 300,000 Rohingyas.
The ISCG in Bangladesh said $77 million in funding was needed to deliver urgent aid to the new arrivals.
Thousands of Rohingya refugees are still stranded on the Myanmar side of the River Naf, which separates the two countries, with the biggest gathering south of the town of Maungdaw, monitors and sources in the area told Reuters.
"This is a cruel and callous way of adding to the misery of people fleeing a systematic campaign of persecution", she said. Some say they were attacked by Buddhist mobs.
Rohingya insurgent group declares monthlong ceasefire in Myanmar
He noted that the situation could not be fully assessed because Myanmar had refused access to human rights investigators.
"It's the responsibility of the global community to move, to act, immediately to stop the bloodshed", said Sarsur, who is also a lawmaker from the Joint (Arab) List.
"The killing, arson, torture and rape".
"It is now a national problem", he said.
At least three have been wounded in land mine blasts, and dozens have drowned when boats capsized during sea crossings.
In response, the military unleashed what it called "clearance operations" to root out the insurgents.
The Turkish President also expressed readiness to work with the governments of Bangladesh and Myanmar to prevent cruelty toward the Muslim minority.
He also criticised "official statements that refugees who have fled the violence will only be allowed back if they can provide "proof of nationality", pointing out that Myanmar since 1962 had been stripping Rohingyas of a wide range of rights, including citizenship rights.
The Arakan Rohingya Salvation Army, a Rohingya insurgent group in Myanmar, declared a temporary ceasefire on Saturday.
The Dalai Lama said he felt "very sad" about the suffering of Rohingya Muslims, and that those harassing them "should remember Buddha". "I think it is a crime against humanity".
The plight of the Rohingya has triggered broad worldwide condemnation of Myanmar and the country's Nobel peace prize laureate leader Aung San Suu Kyi.