Designer Plus say Take It or Leave It

I contacted Momentum Insure on Sunday 06 July regarding a burst water pipe on my roof. Designer Plus were dispatched to attend to the problem. They quoted me 3 times the price of the material, which I obtained from a quick Google search. I queried the cost and one of the workman called his manager Steven who behaved in a highly unprofessional manner telling me to check my facts and 'take it or leave it!' On the advice on one of the workmen, I bought the materials and called Momentum for them to arrange for him to return and carry out the repair. I was told that would incur a call out fee as my insurance only covers one and a return trip would be considered a second call out. Despite requests from Momentum Insure staff for him to call me he failed to do so, having misinformed them about what the content of our discussion. Steven should not be dealing with clients if he believes they are not entitled to querying quotes. Momentum Insure should also be more selective in who they appoint as their 'value added' service providers.