Of course, if keeping accounts open and having credit available could trigger additional spending and debt, it might be more beneficial to close the accounts. Only you know all the ins and outs of your financial situation, and like thumbprints, they're different for each person. Make sure you carefully evaluate your situation; only you know what can work best for your financial outlook.
A number of businesses claiming to do credit repair have sprung up over time, and while some may provide services that can assist consumers, the actual results of their efforts may be questioned. In some cases, credit repair may require legal as well as financial expertise. Depending on the extent of the problem, it may require simply cleaning up misunderstandings, while in other cases professional intervention is needed.
In an industry like credit repair, reputation is everything when choosing which service to use. In that regard, Pyramid comes up short. To find out their track record with the BBB, we had to find them under their alternate business name, Credit Concierge Services LLC. The BBB lists that business as "NR" (No Rating) status until more data comes in; when we found that listing, there was only one review posted and it was negative. We found just over four dozen mostly-positive reviews specifically for Pyramid around the web, but in an age where we know that customer reviews can be faked (unlike what you find on TopConsumerReviews.com!), it's hard to know which ones are truthful without trusted validation like the BBB.
Credit scoring models usually take into account how much you owe compared to how much credit you have available, called your credit utilization rate or your balance-to-limit ratio. Basically it's the sum of all of your revolving debt (such as your credit card balances) divided by the total credit that is available to you (or the total of all your credit limits).