If they crash most of you linux debian server that means something wrong with you debian maybe some package missing.
Temporary you can set up cronjob for reset the remote there is my cronjob.
@weekly /home/tcadmin/Monitor/monitor-service restart
@weekly /home/tcadmin/Monitor/serviceman-service restart
You can edit. Check you system how often is tcadmin crash and edit cron to restart like every hour or every day .
My best answer is to setup 1 dedi with other OS like ubuntu and check it if its crash also. If it crash other OS also you have to contact to the support because most of the people here does have source to check what is wrong