The challenge: Six weeks of outreach in a window that doesn't allow it

Pro Coaching Education Ltd runs sports coaching camps for young people across the South West of the UK. Every school holiday means the same race: get the word out to parents, fill places across dozens of venues, and do it all before the camps start.
The maths was brutal. Nearly 1,900 parents to contact, across 40 venues in 38 different locations. At five minutes per call attempt with a human agent working an eight-hour day, that's over six weeks of solid outreach, for a campaign window that simply doesn't allow it. Hire a team and the cost eats into already tight margins. Don't call enough parents and camps run half-empty.
Pro Coaching needed a way to reach every parent, across every venue, fast enough to actually fill the camps, without blowing the budget on temporary staff.

The solution: A fully automated campaign across 40 venues

Thrumble AI ran the entire Easter holiday camp campaign as a fully automated outbound calling operation. No human agents. No call centre. No scripts pinned to a desk.
The AI contacted 1,847 parents individually, averaging 2.1 call attempts per parent to maximise reach: 3,011 calls in total. Each conversation followed a natural flow, confirming the parent's details, presenting the relevant camp and venue, answering questions, and booking their child's place on the spot.
Every call outcome was automatically structured and logged: booked, voicemail, declined, opt-out, callback requested, or flagged for human review. Call summaries were auto-generated from transcripts, and sentiment was scored across the entire campaign, giving Pro Coaching full visibility into quality without a single manual review.
When a parent needed a callback or a conversation required human attention, Thrumble flagged it immediately. 27 callbacks and 51 review flags surfaced automatically so nothing slipped through the cracks.

The results: The campaign ran for 6 days. A human team would have needed 6+ weeks.

• 1,847 unique parents contacted across 40 camp venues in 38 locations. Every single one reached by AI, zero agent hours required.

• 3,011 total call attempts made with an average of 2.1 touches per parent, ensuring maximum reach without spamming.

• 257 children confirmed onto camps across 144 booked conversations. Places filled, revenue locked in.

• Every call outcome was captured with structured data. Every transcript summarised. Every conversation sentiment-scored.

• 27 callbacks and 51 human review flags were automatically surfaced for follow-up. The kind of detail that would normally require a supervisor listening to recordings after the fact.

The commercial impact: $64,250 in revenue. $2,000 in cost. A 32x return.

$64,250 USD in camp revenue generated: 257 children, each booked for 5 days at $50 per day.
Total campaign cost: ~$2,000 USD. Maintenance and call minutes only.
That's a 3,112% ROI, a 32x return on every dollar spent.
To put it another way: for the price of a single day's temp agency hire, Pro Coaching filled camps across 40 venues in under a week. No recruitment, no training, no management overhead, no missed calls.

32x return on investment. 257 camp places filled. 6 days instead of 6 weeks, fully automated.