Uber Eats Pathetic Service

I places an order on Uber eats on 19 November 2019. Uber eats had a promotion running at Mc Donalds , buy one meal get one free. I places an order for 2 meals and was charged for both meal. I logged a call on the day 19 November 2019 and up until today my issue is not resolved. I keep on getting responses via chat that they still busy investigating.There is no contact number for Uber eats either, pathetic service!!!!!!!!!!!!!!!!