Shocking service Telekom - Melissa Hamburg

Did a sim swop which took 12 days and 4 visits to the store. Telekom system slow apparently. Now waited 17 days and SIM card not activated. Logged calls and emails. Service from manager Melissa Hamburg disgraceful. Could not care less. With technical they eventually reply after 4 mails unanswered. I feel desperate as you do not know where to turn for help. Telekom hide behind the call service and emails so they have no accountability and you cannot get to anyone senior despite being promised someone will call. I will not re new my contract<br> Reference number ***8