Odido

Very unstable app that often doesn't do the one thing it should always do: allow customers to top up their allocated data. Prepare for hours on 32K/s or less, 'something' went wrong and you should try again later... One of the best 'non-descript system messages' sources I know. t-Mobile / Odido used to offer robust interfaces, both with their apps and on the websites. Those days are long gone, glitchy code appears to be good enough nowadays. I got myself a Lebara sim as a fallback option.

Service by telephone is stellar, but the Odido App and its IT services need more work. I'm unable to bind my contract information to my account through the app nor web. I'm unable to claim pre-paid credit for the sign-up bonus. I need to phone support for the most basic interaction I want to do across multiple contracts. I don't mind dialing, but this shows that self-service with the Odido app is outright IMPOSSIBLE. If it works, great. If not, you'll join the phone queue with others.

Before you buy a device, the seller does not want to say all the details about the device. After you want to cancel or something, you have to pay fine and (also data/calling, etc cost), which they will not use anymore. Their contact system isn't good. I'm very unhappy that I use this telecommunicatie service. Their workers have limited knowledge. Because of that, I paid a lot of fine. You have to read the contract very carefully. Don't believe seller.