The 14-year-old boy and his family spoke to BBC Radio 4’s World At One programme and spoke of the hostility they faced at school since the Berlin terror attacks.
He said his friends were unhappy with the German Chancellor, who allowed more than a million migrants to enter Germany in 2015.
When asked if he agreed, he said: “Yeah there’s too many, definitely.”
But his 18-year-old brother interjected and spoke of his gratitude for being let in and allowed to live with his family in Frankfurt.
A Syrian refugee has criticised Angela Merkel's migration policy
Being attacked after what they done for us – no human being will accept that. They are angry now, you can feel it – that they don’t want you
“I’m seeing my life progressing now better than what I saw when I was in Syria,” he said. “After the war started [in Syria] you don’t think for next week, you think only for the next hour.”
The teenagers also spoke of rising tensions with Afghan settlers after the terror attacks.
“They [the Germans] have changed, when they welcomed us it was like they were good,” said one of the boys. “Being attacked after what they done for us – no human being will accept that.
“They are angry now, you can feel it – that they don’t want you.”
Angela Merkel in pictures Tue, November 29, 2016
Angela Merkel has served as German Chancellor since 2005 and Leader of the Christian Democratic Union since 2000. We take a look at her political career in pictures.
Play slideshow AFP/Getty Images 1 of 79
German Chancellor Angela Merkel attends the gala for the 200th anniversary of Werner von Siemens on November 29, 2016 at the historic headquarters of Siemens in Berlin
Get Quotes on Home Insurance
Germany allowed in more than a million migrants in 2015
The youngsters elaborated on adapting to German life and leaving their old customs behind.
“Me, I’m adapting with the German culture, I’m accepting it, I’m taking it and I’m leaving my old culture,” said the older boy.
“[If] you don’t want to go to the public swimming pools because there’s women in bikinis there (sic) – you’re Muslim, you don’t want to go there, OK don’t go there.
“But don’t go to the swimming pool and say ‘women should not be here, let them go out I want to swim’ – you can’t do that.”
Responding to the eye-opening segment was Filippo Grandi, the United Nations High Commissioner for Refugees.
When asked if he thought Mrs Merkel had let in too many refugees, he said: “I don’t think that as the High Commissioner for Refugees I could endorse that view.
"But what I would say however, is that perhaps Germany was too lonely, too alone in taking refugees at the peak of the crisis in Europe.”
- Nigel Farage claims 'most' refugees in Europe are 'ECONOMIC MIGRANTS'
- Italian mayor BLOCKS streets in protest against migrant arrivals
- Syrian refugee 'raped wife in front of toddler son for disobeying him