Backups not being deleted in oracle database 12.1.0.2.0

Dear Experts,

Our backups are getting deleted and we really need your advice here.below are our L0 and L1 BACKUP scripts for your review.L0 runs every sunday and L1 runs every day.

L0

#### Rman backup ##

######CONFIGURE SNAPSHOT CONTROLFILE NAME TO '${BACKUPDIR}/snapcf_${ORACLE_SID}.f';####

##########################

exec >> ${LOGFILE} 2>&1

${ORACLE_HOME}/bin/rman target / nocatalog <<EOF!

configure retention policy to recovery window of 7 DAYS; # default 1

CONFIGURE BACKUP OPTIMIZATION OFF; # default OFF

CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default

CONFIGURE CONTROLFILE AUTOBACKUP ON; # default OFF

CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 1 TIMES TO DISK;

#CONFIGURE ARCHIVELOG DELETION POLICY TO NONE;