unlock samsung j737t1 failed credit taken

hi z3x team,

I tried to unlock samsung J737t1 and unlock success but it still locked. 5 credit is taken. I tried again and thought it will not cost me but the software took another 5 credit. Good news, this time the phone is unlocked.

can I have my five credit back

Checking Login and Password... OK
Ballance: 20 crd.
You have 20 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J737T1
Android version: 8.0.0
PDA version: J737T1UVS3ARK1
CSC version: J737T1TMK3ARK1
Phone version: J737T1UVS3ARK1
Product code: SM2J737TZSATMK
CSC country code: USA
CSC sales code: TMK
Phone SN: R58K962NBMB
IMEI: 359797091066587
HW version: REV1.0
RF cal date: 20180929
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2018-11-01
Boot Warranty bit: 0
SIM State: ABSENT
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... OK
Executing... OK
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... OK
Waiting ADB device... OK
Waiting for device to become ready... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Rebooting phone... OK
Unlock done

Operation: Unlock
Selected model: SM-J737T1
Software version: 34.11

Checking Login and Password... OK
Ballance: 15 crd.
You have 15 credit(s) left. This operation takes 5 credits.Continue? No
Operation: Unlock
Selected model: SM-J737T1
Software version: 34.11

Checking Login and Password... could not connect to server
Checking Login and Password...
Operation: Unlock
Selected model: SM-J737T1
Software version: 34.11

Checking Login and Password... OK
Ballance: 15 crd.
You have 15 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J737T1
Android version: 8.0.0
PDA version: J737T1UVS3ARK1
CSC version: J737T1TMK3ARK1
Phone version: J737T1UVS3ARK1
Product code: SM2J737TZSATMK
CSC country code: USA
CSC sales code: TMK
Phone SN: R58K962NBMB
IMEI: 359797091066587
HW version: REV1.0
RF cal date: 20180929
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2018-11-01
Boot Warranty bit: 0
SIM State: SIM_SERVICE_PROVIDER_LOCKED
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... OK
Executing... OK
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... OK
Waiting ADB device... OK
Waiting for device to become ready... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Rebooting phone... OK
Unlock done