The bot logs shows it paid you a credit of 3680 and then confirmed the shop gave you the credits as well.
1:16:00 AM [INFO] Starting trade session with STEAM_0:0:102385057!
1:17:12 AM [INFO] Trade ended: Success
1:17:12 AM [INFO] Giving STEAM_0:0:102385057 3680 credits for their trade
1:17:12 AM [INFO] Client STEAM_0:0:102385057 old credits: 55; new credits: 3735; Lifetime credits: 4215
1:31:29 AM [INFO] Starting trade session with STEAM_0:0:102385057!
1:32:52 AM [WARN] Unable to request trade status!
1:32:52 AM [INFO] Trade ended: Canceled
1:33:41 AM [INFO] Starting trade session with STEAM_0:0:102385057!
1:34:05 AM [INFO] Trade ended: Canceled
We can also see your shop transactions and follow your credits this way:
L 07/28/2015 - 01:13:07: [candyscript.smx] Buy Water_Botkiller<2383><[U:1:204770114]><> [Explosive Pumpkin @ Your Aim!!] old credits: 252, price: 30
L 07/28/2015 - 01:13:07: [candyscript.smx] Success Water_Botkiller<2383><[U:1:204770114]><> remove 30
L 07/28/2015 - 01:13:39: [candyscript.smx] Buy Water_Botkiller<2383><[U:1:204770114]><> [100% Crits - 30 Seconds] old credits: 222, price: 100
L 07/28/2015 - 01:13:39: [candyscript.smx] Success Water_Botkiller<2383><[U:1:204770114]><> remove 100
L 07/28/2015 - 01:13:39: [TargetCrits.smx] "Console<0><Console><Console>" set "Water_Botkiller<2383><[U:1:204770114]><>"'s crit chance to 100.000000
L 07/28/2015 - 01:14:09: [TargetCrits.smx] "Console<0><Console><Console>" returned "Water_Botkiller<2383><[U:1:204770114]><>"'s crit chance to normal
L 07/28/2015 - 01:14:28: [candyscript.smx] Buy Water_Botkiller<2383><[U:1:204770114]><> [Bumper Car - Until Death] old credits: 124, price: 75
L 07/28/2015 - 01:14:28: [candyscript.smx] Success Water_Botkiller<2383><[U:1:204770114]><> remove 75
L 07/28/2015 - 01:14:28: [kartify.smx] "Console<0><Console><Console>" kartified "Water_Botkiller<2383><[U:1:204770114]><>"
You can see at this point you had 124 credits then you traded with the bot then used the following:
L 07/28/2015 - 01:17:33: [candyscript.smx] Buy Water_Botkiller<2383><[U:1:204770114]><> [Slay a player!] old credits: 3735, price: 1000
L 07/28/2015 - 01:17:33: [candyscript.smx] Success Water_Botkiller<2383><[U:1:204770114]><> remove 1000
L 07/28/2015 - 01:17:57: [candyscript.smx] Buy Water_Botkiller<2383><[U:1:204770114]><> [!vip - 24 Hour Trial] old credits: 2737, price: 900
L 07/28/2015 - 01:17:57: [candyscript.smx] Success Water_Botkiller<2383><[U:1:204770114]><> remove 900
L 07/28/2015 - 01:17:57: [vip_sql_admins_expire.smx] ADD - Proccessed command: "STEAM_0:0:102385057" a 1440
L 07/28/2015 - 01:17:57: [vip_sql_admins_expire.smx] ADD - Adding admin: 76561198165035842, flags:a, time:86400
L 07/28/2015 - 01:17:57: [basecommands.smx] "Console<0><Console><Console>" refreshed the admin cache.
L 07/28/2015 - 01:28:48: [candyscript.smx] Buy Water_Botkiller<2383><[U:1:204770114]><> [Summon the Power of Zeus] old credits: 1857, price: 1000
L 07/28/2015 - 01:28:48: [candyscript.smx] Success Water_Botkiller<2383><[U:1:204770114]><> remove 1000
L 07/28/2015 - 01:29:22: [candyscript.smx] Buy Water_Botkiller<2383><[U:1:204770114]><> [Invisibility - 45 Seconds] old credits: 859, price: 100
L 07/28/2015 - 01:29:22: [candyscript.smx] Success Water_Botkiller<2383><[U:1:204770114]><> remove 100
L 07/28/2015 - 01:29:22: [funcommandsX.smx] "Console<0><Console><Console>" made "Water_Botkiller<2383><[U:1:204770114]><>" invisible
L 07/28/2015 - 01:29:46: [candyscript.smx] Buy Water_Botkiller<2383><[U:1:204770114]><> [HHH Battle To The DEATH] old credits: 759, price: 500
L 07/28/2015 - 01:29:46: [candyscript.smx] Success Water_Botkiller<2383><[U:1:204770114]><> remove 500
L 07/28/2015 - 01:41:41: [candyscript.smx] Buy Water_Botkiller<2395><[U:1:204770114]><> [NoClip + TimeBomb!] old credits: 383, price: 300
L 07/28/2015 - 01:41:41: [candyscript.smx] Success Water_Botkiller<2395><[U:1:204770114]><> remove 300
L 07/28/2015 - 01:41:41: [funcommands.smx] "Console<0><Console><Console>" toggled noclip on "Water_Botkiller<2395><[U:1:204770114]><>"
L 07/28/2015 - 01:41:41: [funcommands.smx] "Console<0><Console><Console>" set a TimeBomb on "Water_Botkiller<2395><[U:1:204770114]><>"
And then after all of that you decided to send in a report:
L 07/28/2015 - 01:45:03: [reportbot.smx] "Water_Botkiller<2395><[U:1:204770114]><>" made a report: i donated a lot and didnt get any credits