interest charges taking you over credit card limit

A question about : interest charges taking you over credit card limit

Hi there,
I have a question if anyone can help?
I have just begun my journey of getting out of debt with the help of national debt line and CASHflow. I have sent off my financial statements and letters offering reduced payment and asking to freeze the interest. I usually pay all my credit card bills on payday which is tomorrow but as I have only just sent the letters off I am actually going to be making my first reduced payments before I have had responses from any of my creditors.
I have researched quite a bit on these forums since I sent off my letters and having found that it can take a while to come to an agreement regarding the freezing of interest. I know that for a while my interest is possibly going to be higher than my payments and I will probably get default charges for not paying the minimum payment and therefore my debts may initially increase.
The issue is that I am pretty near the credit limit on all 5 cards and so my question is ; if the interest and charges take me up to my limit, can they increase to the point that they take me over my limit and therefore I get charged even more for being over limit?
Has anyone had any experience of this?
I'm worried now that the debt is going to accelerate faster than I first thought!

Best answers:

• I've not heard of cashflow - are they a free organisation?
  Sometimes the debt will go up a bit at the beginning of a DMP but should still come down again once you get going.
• CASHflow is a programme that National Debtline get you to sign on to. It has your debt info on there and your outgoings and it works out a financial statement for you and how much you can afford to pay each creditor and also has letters for you to download and send off. Yes it is free.