Slabbing Contractor

I was recommended a man for doing the slabbing (plasterboarding) - by the plasterer. He came out to see the job on Wednesday and I haven't heard from him since. The builder - who didn't include the slabbing or insulation in his price - has given me a price for doing both. The "professional" slabber did say he wouldn't fit the insulation. If he doesn't get back to me before Monday - I'll probably tell the builder to goa ahead and do it. I could possibly fit the insulation myself -but with a 2 year old boy to look after - it might not get done very quickly.