Citi changing terms due to credit report pull??

We are in dispute with the ambulance service. It is now showing as a collection.
Citi has bumped Mom's APR twice in two weeks. Other than possible negative category changes for her account at Citi, it's not a big deal since she pays it off each month automatically.
The timing is suspicious. Other than that, I cannot think of a reason for Citi to bump her APR twice in two weeks.
Mind you, her CL remains unchanged. I am aware some CLs are being reduced without reason. That does not seem to be the case here.

Question: Do other FWers remember what I remember about Citi's response to pressure from Congress? I thought I saw on CSPAN Citi's CEO and others promise not to make such changes due to reported issues outside of Citi on existing Citi CC accounts in good standing.

Question: Are there other things going on at Citi that we need to watch for relative to a CC that is nowhere near the credit limit and has not been so for months?

UPDATE: I may have found the answer to my one question, but I still would like to see comments from others.
New York Times report on the subject

Consumerist.com article seems more timely

JW said: We are in dispute with the ambulance service. It is now showing as a collection.
Citi has bumped Mom's APR twice in two weeks. Other than possible negative category changes for her account at Citi, it's not a big deal since she pays it off each month automatically.
The timing is suspicious. Other than that, I cannot think of a reason for Citi to bump her APR twice in two weeks.
Mind you, her CL remains unchanged. I am aware some CLs are being reduced without reason. That does not seem to be the case here.

Question: Do other FWers remember what I remember about Citi's response to pressure from Congress? I thought I saw on CSPAN Citi's CEO and others promise not to make such changes due to reported issues outside of Citi on existing Citi CC accounts in good standing.

Question: Are there other things going on at Citi that we need to watch for relative to a CC that is nowhere near the credit limit and has not been so for months?

UPDATE: I may have found the answer to my one question, but I still would like to see comments from others.
New York Times report on the subject

Consumerist.com article seems more timelyWhat you are remembering is "Universal Default" - where default rates are triggered when you default on other debts. This is not the same, Citi is just adjusting the base rate based on a higher percieved risk due to the collection account.

Mom went to the ER by rescue squad. That is ok and under control. Later the doctor sent her to a different hospital, but the ambulance company coded it private pay ... not Medicare as they verbalized to us. There are other coding errors IMO.
They failed to disclose to us the outrageous $800 equalivent of a taxi ride they provided. I offered to transport her. The doctor and nurse refused due to an IV.
We submitted a process to Medicare which values the service at an outrageous $142.00, but that is way under the ambulance service's charges to us. We complained. We feel they are unreasonable. They feel the same about us.

LovesABargain said: We got a letter also from 13.xx to 20.99 %. It won't make a difference since we pay off our balance each month, but it does tick me off quite a bit. It doesn't give a reason, and whatever reason they would come up with would be bogus, so yeah, I am looking for a new card.

Let me know what you find...Citi did the same to me..

wow all of a sudden FWF has become creditboards...people not paying water bill, towing service, ambulance, etc etc etc

Yes....fwf have become way too much like creditboards...maybe we should make a sticky for "Collections hounding you? Do this."