No problem
I would wait it out throughout the day and test the connection every 15 minutes, and tomorrow (If it's still acting up) call them.
ATM i have 25 Mb/s down and 2Mb/s up, in the middle of the day my connection goes down to 2 down and .5 up until like 1 in the morning. It really varies on the amount of people using that ISP, and how many electronics are connected in said area.