They can ban you from using them as a business, which is often what these fines are about.

A lot of clinics have failed to attend fees which are pretty much kept not to ever collect, but prevent that patient ever booking again.

When you say sudafed, do you mean the real sudafed with pseudoephedrine, or is it sudafed PE with phenylepherine?

Make sure you get the real pseudoephedrine.