Synchrony Financial Credit Card Complaint

Synchrony Financial Credit card department,

Advertising and marketing California

I applied for a Walmart credit card under the impression that I was to receive a $25.00 credit on my first statement. Which I did n't. I returned a item and paid the difference at the store so I could inquire about my issue. I was told to call Walmart credit card directly and was instructed to pay my balance and the credit will show on my next statement. Which id did n't. I called again and was told that my $25.00 would not show till my 3rd billing cycle. That was not told to me and I feel that I was mislead my Walmart about the $25.00 credit. I alo asked the Walmart associate over the phone if I were to cancel this card would it affect my credit score which he said it would. I feel like the employyes and Walmart should better inform costumers when applying for this credit card. I want to cancel the card but do n't want my credit score to being negatively affected.