Connect Cologne VO 40005643

So, this was my experience: I went there to try to pay an outstanding O2 phone bill. Since they did not accept card payments I said I would come back another time with cash. Some minutes later I get various calls from the guy on my personal number, that he got from the O2 database. It's the first time in my personal history that someone from a shop called me and threatened to cancel my contract bla bla bla. Obviously the guy that works there has no clue of customer service. From what I read here as well, it shouldn't be the first time people are mistreated. Unfortunately I don't speak German fluently enough to be able to file a complaint, but who knows... Conclusion: Avoid at all costs!