Issue with the MS EXCEL (didn't find the answer in the Forum)

I am maintaining a huge excel Sheet and i have to update and access it on regular grounds. It has record of Multiple blogs, their credentials, E-Mail ID and much more in it. When the Email ID or any domain name, i would also like to mention the domain name here it is, please check the domain, when it is inserted in it. Domain is comparitively short thing, there are some urls that are of long size, this really creates problem for me specially i am handling a huge data, please check the hyperlink. It is converted to hyperlink. I remove the hyperlink. But the next time when i access the hyperlink or copy or paste the e-mail id, the removed hyperlink appear again.