Need help with finding appropriate accommodation during a travel
For context, i am traveling to Poland for an internship from Tunisia for a duration of 2 Months this summer for my final year's project thesis. I am having trouble finding an accommodation for my stay, i have received both an invitation from the company and i will be my own financial support and i will take care of of my own costs, not the company, one of the documents required for the Visa application is proof of accommodation, but the issue is that i looked everywhere on the internet for reserving a place but all of them require some sort of prepayments that i cannot provide (due to my country's limitation on foreign currency payment methods, not anybody can pay online with foreign currency), i emailed the embassy but they do not reply, i tried calling them multiple times they do not answer, i tried talking to them physically at their location but they obviously wouldn't have me unless with an appointment (my problem with an appointment is that i can only make one when i will deposit the documents, not for consulting) so i am at a bit of an impasse
anybody have any suggestions or ideas or recommendations on what to do?