Discover Credit Card Complaint

Discover Credit card department,

Credit line increase/decrease North Carolina

i have been a valuable member and have used and paid the card only to receive a - increase in my limit. I think this is ridiculous and i would use the card alot more and pay it off more if the limit was increased. When i opened the account the lady told me that i could probably request a - limit within about 3 months but yet i am at -. My credit report shows i pay all my bills, no matter how many there are, they are paid. I have no collections, i have no past due balances and i am not near my limit on anything