Janice, correct me if I'm wrong (I KNOW you will!) but the charges you are talking about are for the usage UNTIL you get (got?) your own meter connected. It sounds as though Gina may be in a similar position i.e. at the mercy of the developer until getting your own meters for water & leccy.
It's been said dozens of times elsewhere in other threads, but I'll say it again for the benefit of anyone who's just jumped into this one - NEVER complete without the First Occupation Licence. And if you DO have the licence, the developer should also be able to provide you (at least within a short period of time) with the "boletins" to present to the utility companies, and get yourself connected. This is obviously preferable to being in a position where you could be cut off by the developer at any time, or indeed paying him whatever he asks for, just to keep the water running.
(BTW, where I bought 3 years ago, we were on builders elec & water for 6 months - yes, I completed without the licence .....but were never charged a cent - lucky us!)
Gina, if you want to know more about the connection charges for your own supply, have a look at the "utilities" thread. (Fibby put a link to it in her post below).