new canvas top leaking

[greenstreak]

I had a new top put onmy boat. It leaks as soon as it rained. It has a real light water spray inside. They told me to leak it get wet a few times and it will swell and seal. Well, it has never stop leaking. I have had it on now for 3 months. I am going to take the baot back tothem. I know they will want to just spray the top to seal it. Is this the right way to do it or should I make them replace the canvas? If they spray it now while the canvas is new then how often would I have to spray the top in the future?

thanks
art