Lack of follow-up on erased trip history and receipts by Uber

Uber kicked me off of its app a couple of months ago and forced me to register a new account, as the number I had originally used to register my account no longer belonged to me and had a new owner. During the registration process for the new account, Uber forced me to merge the new account with the old one. However, during the merging process, my trip history for the preceding months was erased and I stopped receiving email receipts. I wrote in to Uber support to have my trip history restored and the monthly reports for the erased months to be sent to me over 3 weeks ago and they assured me that the situation would be rectified within 7 days. However, nothing has been rectified and whenever I send them follow-up inquiries, they do not respond. I need the trip receipts as proof of payment in order to claim business trips back from my employer.

I wonder what Uber's customer support policy is. The response time has been abominable and the lack of customer support annoying. The only interface their clients have with them is the app help function, which has proven virtually useless as they respond at will and do not follow up to close open queries. Why don't they have a customer care line?

This has been THE worst customer experience I have had in forever. Uber has been completely useless during this entire process.