Got my second FiOS bill

So I got my second FiOS bill a couple of weeks ago. After the issue with my first bill was straightened out I ended up paying about $43 for the first 6 weeks of service. Well, my second bill was about $90, but applied a $180 credit on my account, so the bill showed -$91. So basically the first 3 months of service will end up costing me about $43. Even if it comes to $90/month for the remainder of the contract, this is such a huge savings that I don’t see how Cablevision could match it.