Buying vacuum cleaner at Game Menlyn

We bought an Electrolux at Game Menlyn. We took it back indicating that the hole is too small to get the pet hair out is too small. The only way to get it out if you open the bag meaning to break the bag open. The game said they had to send it back to Electrolux. After two months of enquiring several times the feedback, we received that we have to contact head office an order a new bag. To me, the wrong vacuum cleaner was sold in the first place and the problem is not solved.