Vodafone's Incorrect Number, Unresolved Issues, and Unfair Fees

I purchased a new SIM card from the Vodafone store near Tekirdağ Çorlu Çeşme bus stop on February 3rd. When my GSM line wasn't activated within four days, I contacted Vodafone customer service and was instructed to visit the store. At the store, they informed me that the last digit of the number was entered incorrectly and that the line wouldn't be activated due to a low bill. They provided a new number and took my current SIM card without any proper documentation. They gave me an unsigned new SIM card and left my old one active. Three months later, I received a bill. When I went back to the store, they were unwelcoming and refused to resolve the issue, claiming it wasn't their fault. We contacted customer service, paid the bill, and they reimbursed us. During our second visit to the store, after a heated argument, we terminated the line and filed a complaint. They claimed we had to pay an early termination fee. We created a complaint letter stating that the store should be responsible for the fee due to their mistake. We were told that we would receive information, but we have been waiting since the line was terminated. Vodafone contacts us on the due date for a payment we shouldn't be responsible for, using both disrespectful language and text messages. I refuse to pay the termination fee for a line I don't possess or use due to the store's error, and I want the consequences to be reflected in the store.