Google Analytics trafficheap.cc Cleanup

Our Analytics reports are being flooded by the spam referral “trafficheap.cc” and, as a side-effect, we are now receiving fake signup emails that mess with our inbox and any downstream automations. I need the property cleaned up and protected so this traffic no longer reaches either the reports or the site forms.

What I know so far
• The spam visits are visible in Google Analytics and GA4.
• I am not sure which—if any—filters are already active.
• The main symptom for us is the stream of bogus signup emails.

What I need from you
1. Audit the existing Google Analytics configuration (views, data streams, referral-exclusion list, filters, tag settings).
2. Remove every trace of trafficheap.cc and any related ghost-referral domains so they do not appear in future reports.
3. Ensure that the cleanup does not hide legitimate traffic or break conversion tracking.
4. Put in place a sustainable method—filters, GTM rules, or server-side tagging—to keep similar spam sources out going forward.
5. Demonstrate the fix by showing at least one full day’s clean traffic sample and by triggering a safe test signup so I can see that only real form submissions reach my email.

Please outline briefly how you plan to do the cleanup and how long you expect the whole process to take.

Charge we can pay is 500 rs