Caring more about sales than they do customer service

I've recently took out a 12 months contract with them turns out to be the biggest mistake I've made. They simply don't care about customer service all that's important to them is getting the sale out of you as a customer. They don't even respond to your complaints or queries at all that's how little they value you as a customer. And on top of that if I cancel this contract due to lack of service I'd be forced to pay them for doing absolutely nothing but giving me the worse experience a service provider have for this year. I've made myself very clear to their sales executive and I did asked before I sign with them for them to provide me with the full process cause I don't wanna be caught off guard. And I'm not sure if it's cause they're only interested in sales that I wasn't given the correct info or is it due to a lack of knowledge. I must say I'm truly regretting not doing my homework first before opting to go with them cause now I'm stuck and if this is how the relationship starts I dread the coming months this is beyond disappointing. If I knew beforehand what I know now I would never have joined them and as is I wouldn't even recommend them to anyone.