I loved this show, anyway went in search of the rest of the lyrics and this is what I found.

If your mansion house needs haunting, just call... Rentaghost.
We've got spooks and ghouls and freaks and fools... at Rentaghost.
Hear the Phantom of the Opera sing a haunting melody.
Remember what you see is not a mystery but... Rentaghost!
At your party be a smarty and hire... Rentaghost.
If you want a fright climb the spooky heights... with Rentaghost.
You can let our spirits move you, and for fun play ghostman's knock,
Because we aim to shock; we hope your knees will knock. That's... Rentaghost!
Let me say the most terrific simple ghost, not scientific,
Maybe supernatural ghouys of the day.
Heavy footsteps in your attic means a spectre telepathic,
Is descending just to spirit you away. Yaaay!
We are extraordinary fellas here at... Rentaghost.
To be another Uri Geller come to RRRentaghost.
For a biography we've ghost writers,
And not forgetting a ghost script.
An apparition quipped from deep inside a crypt... Ring Rentaghost.
An apparition quipped from deep inside a crypt... Ring Rentaghost!
-------------------------------------------
*♥♥XX♥♥XX♥♥XX♥♥XX♥♥XX♥♥XX♥♥*