Poor customer experience

On Sunday I went to Game to add on my laybuy for a particular item, firstly I had to wait an unreasonable amount of time for the manager who was the only one who could help me cause the staff at Game Gateway did not know how to use a new system. Firstly I started at the device department where the lady made me wait for the manager of which was unpleasant so I decided to go to the front and that's where I lost it. I had to wait again for a manager again. How does Game not train they staff to use a new system just implemented. Are we,as customers expected to wait for more then 30 minutes at the till point to pay?! Waiting for one guy who knows how to use the system. Horrible customer experience that I would give Game 1/5. Secondly I was missold cause the gentleman who sold me the device had advised me that it was on special however when I went to game the device was at the price I was advised was a promotion and that really upset me cause misinformation is the worst form of sale an adviser may provide a customer looking for help. How do you sell me a product at standard price but yet give me false information that it's on promotion when it is not. I also find that game customer service centre a waste of time cause when I paid for the laybuy first time the process went on for years before I could be assisted. When the lady that helped me with the laybuy she took longer to process the documents. There were 3 people being serviced but it took forever. Having wait while in a hurry is not providing customer service that makes you give good feedback about a store.