I also had a bad experience with PremiumSIM. Other than really bad coverage, everything is in German, operators don't speak English, and the biggest scam is closing the account. Even though, I terminated the contract, talked to them over the phone which resulted in me not having access to their services since I don't have an account with them anymore, they kept charging me. I still don't know what to do I will write here the solution when I resolve it.
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