Never used that company, but there are others you can try such as http://www.airporttransfers.co.uk , Shuttle Direct, A2B Transfers or Resorthoppa.

luci

I have used airport transfers as suggested by lucy, and would recommend them. Great service

I've used A2B for transfers in Tunisia many times and booked them again for next month. However, I read elsewhere that Travel Republic use A2B and out of interest checked their price for the same transfer and it was actually £5 cheaper. I wasn't worried as I was travelling solo but if you are a family it's worth bearing in mind.

We had no problems with Holiday Taxis recently, which was booked through TravelRepublic.
I have a suspicion these various transfer companies are affliated as we checked in at the Resort Hopper desk!.

Caz