@tjsas1 problem is isp most likely will do nothing about it, unless this was a business line and you have ddos protection with them (normally not free)..
Your best bet is prob get your IP changed, if you can not do it locally by altering your pfsense mac address on its public interface. Then get with your ISP and asking them change your IP, because your seeing inbound dos traffic - send them the sniffs you did showing the traffic, etc. And any info you can gather about amount. I wouldn't hide your public IP in those sniffs ;)
Problem is with such traffic is nothing you can do at your end, other then changing your IP..
internet -- isp --- 10mbps connection --- you
If the internet is sending you 10mbps of traffic, and filling up your pipe.. There is really nothing you can do at your end.. The traffic be it you drop it on your end or not, is still using up your connection. Its a common misconception to what a firewall can do.. Now if there was say 1mbps of traffic and it was being sent to your server behind your router/firewall and this 1mbps of traffic was hurting your servers performance - then you could filter that from being sent on to your server. But as long as the traffic is sent, your connection would still see the 1mbps of traffic.. You need to stop the traffic from being sent to you down your limited connection. This is either done at the isp end, or you need to change your IP so that traffic to 1.2.3.4 doesn't go down your connection.
Other option ;) Get a fatter connection heheh.. If you had 1gig, and they were only sending 10mbps - then it wouldn't be a problem.. But if sending 1gig, you have the same problem.