I have never experienced such appalling treatment from any company as I have with O2. I have been with them for years. Since 28th July 2025, when my service (and my wife’s) stopped working after following O2’s own migration process, my life has been turned upside down. I followed this process of advice received in store and on the call with multiple agents. For a month now I have been left with no working phone service – unable to reliably make or receive calls or texts. I had to purchase a EU virtual sim abroad just to reach family. This has caused huge distress and disruption to both my personal life and business. Clients can’t reach me, I can’t receive important messages, and I have been left completely stranded while abroad. During this period, O2 has: 1. Lied to me multiple times — promising follow-ups and resolutions that never came. 2. Hung up on me during calls when I pressed for answers. 3. Sent me boilerplate, copy-paste emails that ignored all the details I had provided. 4. Wrongly closed a complaint claiming they had spoken to me and resolved the issue — a complete fabrication. 5. Opened multiple complaint numbers instead of fixing the problem: • C-2908257167 • C-3107256997 • C-0508257082 6. Sent me a bill for £54, which I disputed and then paid under protest just to protect my credit record. Despite this, O2 still escalated me to a debt collection agency, causing further stress and humiliation. The emotional toll this has taken is severe. I have lost time, money, and peace of mind. I have spent hours chasing O2, repeating myself, and getting nowhere. Instead of helping, they have added to the distress with threats of passing me to debt agency (even though I paid and informed them in advance that I am happy to pay, but couldn’t as I have also been logged out of MyO2 App). This is not just poor service — it is negligence. O2 has failed at every level: technical, customer service, billing, and complaints handling. The complains handling is HORRENDOUS! They have shown no accountability and no care for the impact on their customers. If you are considering O2, think twice. They have left me without service for weeks, damaged my mental health, and harmed my business. I wouldn’t wish this experience on anyone I am completely lost in how to receive any help. I told them multiple times I cannot receive calls on my O2 number as it’s no longer working and their boilerplate replies insist they will email me and call me. Nothing!