Lost access to old hotmail account

I have lost access to my old hotmail account, which was linked with my current account, and there is no way for me to retrieve it, as I have seem to not have linked my phone with my account. Is there any way to contact someone from Microsoft to look into this matter? My correct e-mail was linked with the lost one, before the separation a few weeks ago. The old e-mail is still being used for certain important things, and it's pretty important i regain access to this account. Account recovery didn't help either, as I have not been active on that account for a long time. Thanks in advance!