Roaming Service charging me unfairly amount of money - GLOBAL TRAVEL PASS AGENTS MISINFORM!!!

I travel to Beirut with a layover in Turkey. I called the agent in Turkey and he inform me about the Global Pass. I told him that my last destination was Lebanon, Beirut and he follow by saying that the travel pass cover both country without a problem. Keep in mind Xfinity records all calls. When the agent told me that I agree with getting the Global Pass. It came to my surprise that Beirut was not in the Global Pass list of counties even thought the agent told me so. Now they want me to pay an unfairly and high amount of money because of this. I opened several cases some agents lie about opening cases some other did help but at the end the problem still hasn't been solve. I told them several times to check the recording of the call because I did call them to ask about information of the program they offer. They kept pushing for month and month, case after case, blocked all my other services with Xfinity. AND now it come to my surprise that they are threatening me to send this debt they put me in to collection with will affect negatively my credit score. 

If they would have give me the correct information I would have never taken their services. I am not stupid to spend crazy amount of money for a few days in a country, I am a struggling student. They just take advantage of this scenario and it's affecting me negatively.

I really need help to contact someone who I can talk to solve this. All the agents Xfinity has are not helpful. 

Please I need a direct email of someone who can't actually solve this issue. It really unfair and unprofessional for a big company like Xfinity to have their users experience something like this.