Dyson vacuum cleaner cannot be registered for guarantee and @Home unwilling to assist

I bought a Dyson V15 vacuum cleaner from @Home inside Century City Cape Town on 22nd December 2023 The sales person stated that in order to activate the guarantee , i must register the machine on the internet However the system kept on rejecting my attempt to register the vacuum cleaner with a message that the vacuum cleaner serial number is unrecognised , therefore i could not register the guarantee I went back to the shop @Home ( outside Century City ) on the 26th December 2023 , and i explained to them the situation ( please note that a trip to Century City is a 220km round trip ) at the shop they tried to contact the Dyson REP , without success , i was requested to leave my contact details , which i did However one week later i have had no contact from Dyson , i went back to the shop today - again a round trip of 220km , only to be given a phone number to contact the REP myself , as the shop could not locate him This is totally unacceptable , and i am not sure if the vacuum cleaner is a genuine item or a **** item , if i can not get an answer this week , i will return the vacuum cleaner for a full refund