I've accidently created two ccounts with two emails and can't delete the second one

[Tracey77]

I created an account a year ago using my personal email address and logged in using Facebook.  I haven't used the account since.

I'm going overseas in September so I uploaded the app to my ipad and logged in using the email I thought I'd used and it created a new account.  When I realised my error  logged out and tried to log back in to the new account so I could delete it.  It tells me that I logged in originally using Facebook and that I have to log in that way.

I log in using facebook and it takes me into the new account that has no trips listed (I have two booked and paid for) and when I go in to edit my profile it shows the old email address (which is the correct email address).

I'm finding it impossible to contact Air BnB directly and keep going around in circles.

Please help!