LG K550 UNLOCK not done but credit taking

LG 2-3G Tool v9.48
supported models: 1555

Mode: Normal
Model: LGK550AT
Build version: Apr 17 201715:23:22Mar 21 201706:00:00LGK550AT
SW Version: MPSS.JO.1.2.c2.1-00028-8937_GENNS_PACK-1
IMEI: 35826907277414-3
BlueTooth Address: 00:00:00:00:00:00
Phone Code:
Elapsed: 3 secs. --> (v9.48)

Mode: Normal
Model: LGK550AT
Build version: Apr 17 201715:23:22Mar 21 201706:00:00LGK550AT
SW Version: MPSS.JO.1.2.c2.1-00028-8937_GENNS_PACK-1
IMEI: 35826907277414-3
BlueTooth Address: 00:00:00:00:00:00
Phone Code:
Elapsed: 1 secs. --> (v9.48)

Mode: Normal
Model: LGK550AT
Build version: Apr 17 201715:23:22Mar 21 201706:00:00LGK550AT
SW Version: MPSS.JO.1.2.c2.1-00028-8937_GENNS_PACK-1
IMEI: 35826907277414-3
BlueTooth Address: 00:00:00:00:00:00
Phone Code:
Elapsed: 1 secs. --> (v9.48)

Checking Login and Password... OK
Ballance: 10 crd.
You have 10 credit(s) left. This operation takes 10 credits.Continue? Yes
Searching modem interface... found COM4
Reading data from phone... OK
IMEI: 358269072774143
Checking root rights... OK
Writing zTool... OK
SW Version: K55020a
Initialization zTool... (this can take 1-2 minutes) OK
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... OK
Initialization zTool... (this can take 1-2 minutes) OK
Reading data from phone... error(10 7.30100)
Elapsed: 169 secs. --> (v9.48)

Mode: Normal
Model: LGK550AT
Build version: Apr 17 201715:23:22Mar 21 201706:00:00LGK550AT
SW Version: MPSS.JO.1.2.c2.1-00028-8937_GENNS_PACK-1
IMEI: 35826907277414-3
BlueTooth Address: 00:00:00:00:00:00
Phone Code:
Elapsed: 1 secs. --> (v9.48)

Checking Login and Password... OK
Ballance: 0 crd.
Not enough credits
Not unlocked but but my 20credit is gone need refund to do it again