Product: Credit card

We have XXXX CitiBank credit cards.Payment due dates are on the XXXX & XXXX of each month. The XX/XX/year> payments were both paid on XX/XX/XXXX, with more than double the min pmt requested. 
On XX/XX/year>, Due to a NON-UPDATED XXXX Credit Bureau report, the Citi Bank " computer '' elected to reduce BOTH credit card limits to just about the current balances, wiping out OVER {$16000.00} in available credit, with no paper notice, { Just a message on our online accounts }, Not to mention just before the holidays, but we were traveling and had no knowledge of this credit reduction and were almost stranded out of State. 

The reason provided was " too high balances to total credit availability '' or credit utilization %.. The issue that triggered it was a new credit card offer for a balance TRANSFER with XXXX interest for 21 months. This was a TRANSFER, NOT ADDED INDEBTEDNESS .... 
The balance transfer offer allowed for {$6000.00} availability, which we tapped into and proceeded to pay down other various credit cards, thus reducing not only the interest we were paying, but also the principal balances of our credit debt by that same {$6000.00}. 
This of course looked like we ran up another credit card to it's full credit limit, which is not accurate, it only moved funds and actually bettered our financial position and overall credit worthiness XXXX, a XXXX XXXX XXXX account that showed we used all {$1000.00} of credit, but at the time Citi reduced our credit, the XXXX  balance was actually only {$400.00}, " again this was a no interest same as cash if paid back in 6 months.. which is on track to be paid back completely. 

XXXX, there is XXXX other small credit balance { under {$1700.00} } that we needed to use for a pet emergency. 
All this happened PRIOR to the Citi issue and no action was taken then. It happened with no reasonable notice, { since there was no reason to pull up our Citi account online at that specific time. We were also told a paper letter was sent to us on XX/XX/XXXX, today is XX/XX/XXXX and we still have not received it }. 
Our Citi Card payment history has been excellent, and there is no reason to reduce our credit limits. With this grievous action, it also triggered our credit scores to go down which is going to affect all our credit needs moving forward.Since now it is showing BOTH our Citi cards balances as right at our NEW credit limits, and looking as we have multiple credit accounts at the 100 % limits. This is making us look like we are abusing our available credit sources, when in reality, we are working very hard paying everything on time, increasing our scores and being pro-active in managing our financial life. 
This action by Citi Bank is just not right. { We do understand they have the legal right to do it, but it just is not warranted in our opinion! } With all this said, we can not seem to locate a XXXX based Citi Bank XXXX that has the ability to discuss this and re-instate our account 's credit limits, over {$16000.00} lost availability. 
We very much care to stay a Cit customer, IF we can get this problem resolved. 
All they offer is for us to call back and ask for a re-in statement of our credit, but they do not offer a way to allow us to document this whole scenario. 
If we do this that requires another HARD hit on our credit and that just makes the problem worse!