Hello Forum!
A couple years ago I bought some BTC and then spent them all on purchasing some BitBills. I have the BitBills in my possession.
What I wanted to find out was, how do I sell the Bitbills or convert them into BTC so that I can receive the cash?
Its been ages since I have read up on Bitcoins so I am rather rusty!
Appreciate any help anyone can offer me

Why do people convert bitcoins into these physical forms in the first place?
I think it is helpful to some people to see a tangible form of the money. I buy or make physical bitcoins (in paper and coin form) and hand them out to people as a way to introduce Bitcoin to them.
The conversation usually goes something like this:
"I've heard of Bitcoins."
"Well, here you go. Now you have some."
...
I don't think anyone expects to use these for buying stuff because they are either expensive or they are unsuitable for circulation.