Illegal Throttling
After years of being their client, they started severely throttling roaming after 5GB. When I say "severely", I mean data rates so low I couldn't even use Whatsapp. When I confronted them about it, they tried to gaslight me by pretending that it was official policy since COVID. But it wasn't. I travel extensively as a videographer and routinely would go over the 5GB cutoff. Furthermore, my contracts never mentioned any provision of such a policy.
After changing providers, they sent me a bogus CHF 700 early termination bill too.
All-in-all a horrible experience. It's a company run by greedy snakes hell-bent on enshittification.