diff --git a/packages/db/prisma/seed.ts b/packages/db/prisma/seed.ts
index 6cf8d7e..86a5b95 100644
--- a/packages/db/prisma/seed.ts
+++ b/packages/db/prisma/seed.ts
@@ -113,7 +113,7 @@ async function main() {
   const userDefs = [
     { email: 'admin@demo-isp.com', first: 'Admin', last: 'User', role: 'tenant_admin' },
     { email: 'manager@demo-isp.com', first: 'Maria', last: 'Reyes', role: 'manager' },
-    { email: 'collector@demo-isp.com', first: 'Juan', last: 'Santos', role: 'technician' },
+    { email: 'collector@demo-isp.com', first: 'Juan', last: 'Santos', role: 'collector' },
     { email: 'tech@demo-isp.com', first: 'Pedro', last: 'Cruz', role: 'technician' },
     { email: 'tech2@demo-isp.com', first: 'Jose', last: 'Garcia', role: 'technician' },
     { email: 'viewer@demo-isp.com', first: 'Ana', last: 'Lopez', role: 'viewer' },
@@ -468,13 +468,14 @@ async function main() {
           const methods = ['gcash', 'maya', 'cash', 'bank_transfer'];
           const method = methods[Math.floor(Math.random() * methods.length)];
           const paidDate = new Date(dueDate.getTime() - 86400000 * Math.floor(Math.random() * 5));
+          const collector = i % 2 === 0 ? usersByEmail['collector@demo-isp.com'] : usersByEmail['tech@demo-isp.com'];
 
           await prisma.payment.create({
             data: {
               tenantId: tenant.id,
               clientId: client.id,
               invoiceId: invoice.id,
-              collectedById: users.technician.id,
+              collectedById: collector.id,
               amount,
               method,
               referenceNo: method !== 'cash' ? `REF-${String(Math.floor(Math.random() * 99999)).padStart(5, '0')}` : null,
@@ -482,17 +483,17 @@ async function main() {
             },
           });
         } else if (status === 'partial') {
-          // Partial payment - half the amount
           const methods = ['gcash', 'cash'];
           const method = methods[Math.floor(Math.random() * methods.length)];
           const paidDate = new Date(dueDate.getTime() - 86400000 * 2);
+          const collector = i % 2 === 0 ? usersByEmail['collector@demo-isp.com'] : usersByEmail['tech@demo-isp.com'];
 
           await prisma.payment.create({
             data: {
               tenantId: tenant.id,
               clientId: client.id,
               invoiceId: invoice.id,
-              collectedById: users.technician.id,
+              collectedById: collector.id,
               amount: Math.round(amount / 2),
               method,
               referenceNo: method !== 'cash' ? `REF-${String(Math.floor(Math.random() * 99999)).padStart(5, '0')}` : null,