Internet issues

Ugh, so for almost a week we've been having issues with our internet. We will be online and then the lights on the modem start to blink and we can't get online. When we called Comcast they said it sounded like the splitter outside, and if they had to fix it it would cost US $50....WTF?!?!? Z brought a splitter home and changed it and we still had issues so we were told it could be the modem, so we exchanged the modem and it seemed to work.......for about half of the day on Friday. Now Comcast is supposed to come out later this afternoon to see what's going on. I'm sorry, but their customer service is not the greatest........add to the mix that aunt flo is here and i'm super crampy and grumpy.......FIX MY INTERNET!!!!!