I have been calling this company for days to solve...

I have been calling this company for days to solve me that they have charged me x2 the bill for this month and only that they give me long "What if I happen to you with the department, that if that is not happened to you with another, that if half an hour of little music, what if ... "Ah! it has been cut! What a coincidence! ", what if: well, we call you now after it seems that now they are not operational, and then nobody calls ... so, I decided to contact the web, and the same, they do not give me any solution. I mean, do I have to put up with this month having paid 120 euros of internet (because in addition to duplicate, they have charged me twice as much as usual)? They are the worst, let's go. I'm thinking about what company to hire, this comment will help.