Here is what I can find:

Gift Card 0054

January 2th 2017 was swiped for 43.75 with a gift card balance of 31.25

January 12th 2017 it was swiped for 31.25 remaining balance was put on a cc 14.75

April 12th 2017 same gift card was swiped for 89.86 (?)with a remaining balance on gc for 60.14

April 12th 2017(yes same day and yes same GC was swiped for 24.00 with a remainder of 36.14 on gc

May 17th 2017 someone came in to check balance (at the time we would ring up a penny and swipe the gc to see how much was left on the GC)( we didnt know we could check in the gc section) the amount came to 36.12

August 1 2017 someone came in to check on amount open to buy on gc amount was 36.12

December 27 2017 a little old lady came in with the GC and stated she won it at a raffle. (which we donate gc's but only for the amount of 25.00)So she picked some items out the total was 78.84 we ran the GC through and we told her the amount she owed us was 17.72. She stated there is a mistake... this gc was for the denomination of 25. my employee looked again and stated to the lady no.. There is an amount of 61.12 on the GC. so when the lady left I went back and found all this activity on the GCin our activity section of our square. 

#1 What is the logical explaination?

#2 We dont reload cards so how can this card be reloaded.

#3 How and where can I find when this card was originally loaded and  when it was reloaded.

#4 Also during these transactions there was a cc used how and where can I whose cc was part of the transactions.

please advise 

These are huge discrepancies for a business of my size if it is multiplied.

Thanks!