Old spinning bikes at heuweloord club

Planet fitness heuweloord you are actually taking advantage of your paying members. The spinning bikes you have are a health hazard and you will be liable for any injuries that will be cause by those old bikes in that studio. I attended the class and the chair kept on sliding down on its own, do you know the potential injury that could be caused by that if I am spinning at a high pace sitting down then the next thing I am down to my knees. For a gym that's not even 2 years do we deserve old machines from an old club, come on now don't take us for granted. I will stop doing spinning class up until you replace the old bikes with the new ones and I will warn people about your gym to stay away up until you take us serious. Should I witness a person getting injured as a result I will make sure they report and claim for injuries.