How praivlno restrict incoming traffic on cisco 2951?

Question

Cisco

Greetings. There is a problem. Two isp. One channel goes to bed several times a day, exactly for 15 seconds. The provider says that there is a stream that exceeds our declared speed. Our speed is 100 Mbps. During the day it can reach 130-140. I decided to limit incoming traffic on the channel-forming interface . Tell me
how best to do it, more precisely how.
I think it is necessary to hang up the speed limit, let's say no more than 100Mbps, so as not to go beyond. Advise how to do this correctly.