apple account constantly rejecting correct password

This has been going on for months now. I know the password is correct as I have written it down to confirm I’m using the correct one. A day after I reset it I’m being told it’s incorrect, this has happened so many times now Apple is obviously convinced I’m trying to steal my own data and sometimes I have to wait up to a week before I can reset the password. Same thing happens it works for a day and then I’m told it’s incorrect. Any suggestions?