No joy in sorting out my Uber Rider profile!

I am unable to sort out my Uber Rider account, and every time after responding to information requested by Uber to verify my Rider account via email, I received the following message, despite providing my cell phone number and despite having responded from both my email addresses. I am desperate! Fact is I do not have a registered e-mail address with Uber, only a cell number, which I will gladly again provide them when acquiring my email from yourselves by Uber. I find myself in an endless loop without getting anywhere! Hellopeter is my only option left.

"Thanks for getting in touch.

We received this email from a different email address than the one you initially used to contact us.

In order for us to address your inquiry, please contact us from that email address.

We appreciate your patience and look forward to hearing from you."