2013 Volt - Traction Battery Issue

My 2013 Volt with 89k miles had a CEL come on last week, took it to the dealer a week or so ago where they said one section of the battery needed to be replaced. Because they told me this one other time and it ended up not being true I waited for confirmation this time before posting here. I checked in with the service department today and they said that GM is sending a replacement for one section of the main traction battery. The service rep said there were bad cells, but I haven't seen that written/confirmed anywhere. He did say the battery is ordered, but it will take 3 weeks to get here. Oh, and tonight when leaving work another CEL came on stating something like "Service high voltage charging systems" and the car will not accept a charge at all.....Soooo, off to the dealership again in the morning, getting really tired of this car......love/hate relationship with the Volt, great car when it is working, but I have never in my life had so many issues with a vehicle.