Vespa — worst servicing and bike spare parts

I am vex by using this vespa bike. The service centers also waste. If we give bike for servicing they will create one new issue every time.
When you come to spare parts those are too much of cost.
Most important disadvantage of this bike is it will stop suddenly while you drive and gives some jerks when speed beaker comes.
In short, driving vespa is like digging hole for ourself.