October 14, 2025 · 🛠 Entrepreneurship
How 10€ / month cost us 5k in 4 days
Written by Sérgio Ferrás

As we grow the team, we need new phone numbers and cell phones for each person
In this process, we discovered a 50% cheaper carrier.
We thought “this is awesome! With scale will be saving 100s per month”
We switched providers immediately.
Website setup was easy to do, and so we thought things would go according to plan
After 1 day, we got the SIM card and we’re ready to rock’n’roll!
We called the carrier and asked to transition to an eSIM, which they did.
After the transition, that phone number suddenly stopped receiving phone calls
We tried to reach out to support, but after 4 days the problem was never fixed.
During this time, clients would call us with questions about the payment, but would get a disconnected line
We called these clients back after we noticed the issue, but there was nothing to do
The deals were gone.
We tried to save 10€ / month. Ended up losing 5k after one 4 days.
When you’re dealing with a core activity of the business, reliability is your most important asset
Clients expect an immediate response. If you fail to deliver that, you’re dead.
I’m never again trading reliability for a couple of bucks saved
More posts

June 8, 2026 · 🧩 Strategy & Systems
The greatest people make the greatest companies
I used to believe the perfect system would become a money-printing machine. But now I spend just as much time thinking about the people behind them.
Read more →
June 3, 2026 · 🧠 Mindset & Freedom
You should do what scares you
The moment we give in to one fear, we tend to give in to all others! We lose confidence in ourselves, and therefore no longer have power over what we do.
Read more →
October 27, 2025 · 🛠 Entrepreneurship
Indecision hurts more than bad decisions
“You are this company’s bottle neck!” This is what my cofounder told me earlier this week. As hard as it was to swallow that pill, he was right. Being a perfectionist, I tend to want to do everything myself. Every time I’m faced with a decision, I think and rationalize it. I try to do …
Read more →
October 21, 2025 · 💻 Tech
Work for weeks, or think for some minutes?
I just slashed a project timeline by 85% with the same results. All my website is built in custom code with NextJS. We are now starting a blog to grow our organic reach. For maximum SEO results, the blog needs to be under the same domain And so my first thought was coding the blog …
Read more →