Totally frustrated Kirby owner.

I have had constant calls at least every day for the last forever. They call, I say no I don't want bags or service or shampoo. They call again the next day asking the same thing. I told them.when I need stock I will call. The lady called me on Friday asking if.i needed a service (special) or anything. I told her I will ask hubby and I will call if we need. She called the next day asking if I had spoken to him. I am already so frustrated that I fear I may be extremely rude and likely swear at the person. We are regretting buying this machine and actually just want to sell it. The machine is amazing but I.cannot stand the harassment and spam calls anymore. I have already today been called and its a public holiday. They call on Saturdays. Their guy told me to just block their number but they call with different numbers and it's rhe same lady.