<prompt> Human: I recently opened a new bank account to save income from an infrequent job I have. Every couple of weeks Ill be able to deposit an additional 100 into this account. Id like to grow this amount over time. The bank offered me a credit card with a 5,000 line of credit for which I was told I qualified. I declined the offer.Now this bank mailed me what reads as a a debit mastercard for my newly opened account despite my specifically asking to not open a debitcredit card. Im not sure if this is the credit card they mentioned and fear a new line of credit was opened in my name or if its simply a debit card?Is this debit card going to hurt my credit score? Given that I have no plans on using it, is there anyway I can close it? What else should I know in this situation? This whole scenario has me rather nervous as Ive been told not to open credit cards without using them and Ive read closing them can be problematic.  <response>: No. Debit cardssavingschecking accounts are not lines of credit. 