Turkcell Gave Me the Wrong Number After Porting and Won’t Fix the Issue

I applied for a number porting process at a Turkcell store, and I was given a SIM card. After the number porting was completed, I inserted the SIM card into my phone, only to find that a different number appeared on the SIM card. My number shows as deactivated. Despite calling customer service 4-5 times and explaining the issue, no solution has been provided, and they just keep telling me that I need to get a replacement SIM card, essentially brushing me off. They are treating the issue, which is clearly their mistake as if it’s something I need to fix. I currently cannot leave the area I’m in and have no other means of communication. I request that my issue be resolved as soon as possible. If the problem cannot be fixed, I would like to cancel the number porting process.