<prompt> Human: PNC just sent me an email stating that since Youve done a great job managing your credit card account that my credit card limit had been increased from 2000 to 3000 effective immediately. I had not requested it nor given any approval. I assume it will not have any impact on my credit score, but still was surprised. Is this typical? Ive never had this occur with my other cards.  <response>: Credit limits can be increased or decreased with no warning by your card issuer. 