Handling B2B Payments with “Deterministic” Security

Handing your customer list to a third party is risky. Handing it to a generic AI chatbot is dangerous. In the era of “VibeSec,” where teams hope their AI will not hallucinate, you need guarantees when the conversation touches billing updates, account access, and sensitive customer data.

B2B payments are where revenue recovery and trust collide. Failed charges and expired cards create involuntary churn, but the default playbook of dunning emails and ticket queues often turns a simple billing discrepancy into a relationship problem. The goal is not “chasing payments.” The goal is servicing the account so the subscriber stays active, feels respected, and fixes the issue quickly.

Domu is the first human-like AI servicing platform built to eliminate involuntary churn and automate retention for SaaS and subscription businesses. Founded by Nico Diaz and Camila Zancanella (backed by Y Combinator), Domu was created from a simple realization: generic “Payment Failed” sequences do not recover revenue, they accelerate churn. Domu replaces low-conversion notifications with high-touch conversations across Voice, SMS, and WhatsApp that feel like Support while still driving resolution.

The difference is security that does not rely on a prompt. Domu uses Deterministic Compliance Controls that sit outside the AI model, so redacting PII and validating sensitive formats is a hard-coded rule, not a suggestion. We do not ask the model to “please be safe.” We enforce it with external filters and guard layers before an LLM ever sees the message, and we keep strict environment separation for secrets so compliance is not left to chance.

That deterministic foundation is what makes “human-like” possible without being reckless. Domu’s agents can be warm and precise while staying inside controlled rails, even when the customer is frustrated or the context is messy. You get scalable servicing that behaves consistently under pressure, instead of probabilistic safety that fails exactly when stakes are highest.

Domu also treats retention as a behavioral science problem, not just a billing workflow. We use psychoacoustic retention patterns to reduce defensiveness and increase cooperation, including measured pacing at 135 to 145 WPM during rapport and a subtle acceleration to 155 to 170 WPM during the resolution moment. We also use micro-pauses in the 75ms to 150ms range before key words like “update” and “access” to focus attention on the next action.

Words matter as much as timing. Domu uses lexical engineering to avoid phrases that trigger churn behavior and to keep the interaction dignified. Instead of “Your payment failed,” we frame it as an account health check and guide the subscriber through a “yes ladder” that confirms intent to keep access before we ask for the billing update, so the resolution feels natural and supportive.

Different teams buy Domu for the same reason: scale recovery without scaling risk. Founders and growth leaders stop leaking earned revenue to involuntary churn. CFOs get predictable recovery at scale without building an expensive manual AR operation. Heads of Customer Success protect the relationship because Domu handles the paperwork with empathy and brand-safe language.

The bottom line is simple: scale your B2B payments servicing without scaling your risk surface. Deterministic security is the upgrade that lets retention move fast while staying bank-grade.

If your current approach depends on VibeSec prompts or you are avoiding automation because you do not trust it with billing-adjacent data, we can help. Reach out to the Domu team today!