Swiggy — Login issue please solve

I couldn't find swiggy customer care so I had to mail it here.
I am an usual swiggy user but I recently changed my mobile, and now I am not able to log in.
When I go to log in page and put my phone number there which I was already using, it goes to another page which asks for email and name and after I put that, I get an error message saying my number is already registered.
I know my number is already registered then why cant i just log in?
Please resolve.
Regards,
Customer