UberEats Gift Voucher ****

i bought the Uber Eats Gift Voucher two weeks ago, on my Nedbank Money App, for R200, and then when i went to my UberEats account to order some food with that, its giving me an error saying none of the restaurants are accepting this method of payment. i reported to UberEats on Facebook sent them message and email with Screenshot and my details they have not done anything for me till now, i need that money, we can joke about anything but not about money, some of us work hard for their money.