I need help urgently please I cannot pay the amount for the phone line

I need help urgently please I cannot pay the amount for the phone line And my country, Egypt, the credit card does not work on the site, and Egypt is not present in the countries

I bought a line for the Internet and WhatsApp for work, and I traveled to Egypt, and now I want to pay the subscription amount of 10 dollars, but the application cannot be opened, so I opened the account through the website, but my country is not available in the rest of the country, and the credit card is not accepted. I want to keep With my number because my work is done through it, what should I do?