Possible to convert my $86.12 Dell Dollars back to Dell Reward Points?

Hello,
I mistakenly converted all of my Dell reward points to Dell dollars. I was planing on buying a nice Dell desktop and accidently converted all my Dell reward points but realized I would rather have a Dell monitor. After I purchased the Dell monitor I realized all my Dell points where converted to Dell Dollars and now have a much earlier expiration date. Is it possible to convert my $86.12 Dell Dollars back to Dell Reward Points? Could you please assist me in refunding these reward points back to my account? I would be extremely grateful and I appreciate your help with this matter.

Thank you