From 20 minutes to 5: how Trasteros Plus closes contracts with AI
The challenge
Trasteros Plus's call center team manually handled every incoming WhatsApp message across 10 locations spread throughout Andalucía. Each conversation required an agent to gather customer information, assess their needs and prepare a quote, stretching the closing process to 20 minutes per operation.
The solution
Boxsia AI was integrated into Trasteros Plus's WhatsApp channel as a virtual assistant active 24/7. The AI automatically gathers all relevant information from the prospective customer — space needs, preferred location, start date — generates a qualified lead and hands it to the sales team ready to close. The call center no longer replies to WhatsApp: it only closes.
Our call center no longer worries about replying to WhatsApp. The AI handles everything and our team only steps in to close the sale.
Trasteros Plus operates 10 self-storage locations across Andalucía and runs its own call center to manage relationships with current and prospective customers. Before Boxsia AI, every message that arrived via WhatsApp required manual intervention from an agent: reading the enquiry, identifying the customer's needs, responding, following up and only then starting the contracting process.
The result was a closing process that could stretch to 20 minutes per operation, with service limited to call center hours and no capacity to respond outside that window.
The transformation with Boxsia AI
After integrating the virtual assistant into its WhatsApp channel, Trasteros Plus fully automated the lead qualification phase. Boxsia AI engages the customer from the very first message: asking what they need, in which area, when they want access to the unit, and what size they estimate they'll need. With that information, it generates a structured lead and passes it to the sales team.
The agent no longer starts from scratch. They receive a summary with everything they need to know and only have to take the final step: closing the contract. What used to take 20 minutes is now resolved in around 5.
Round-the-clock coverage, no extra effort
One unexpected benefit was after-hours coverage. Boxsia AI is active 24 hours a day, 7 days a week, so customers who reach out at night or on weekends get an immediate response and are properly qualified for the team come Monday morning. No lead is lost for arriving outside business hours.
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