BAD SERVICE - TEVO

I have been contacting Tevo's national spares department (***) since October/November 2019. With the first email i got a replay and asked for a picture of the part to ensure it was the correct one, it was whatsapped to me two days later and was the incorrect part, I rep**** and heard nothing further. i tried again and this time sent them the picture of the part i needed with no repasons. On the 30th December I sent an email again and and was told the are waiting for stock please communicate in two weeks time. on the 8th and 14th of January i asked again if there was an update with no response. I then phoned customer services and was told the person responsible is on leave but it will be escalated to their manager and i will be cc in. It is now the 29th of January and i have not received an email escalating it to the manager or any response from Tevo regarding the parts.