Tevo - very disappointing after sales service.

I'm highly disappointed with the after sales service from Tevo. I bought a whisper compact vacuum cleaner about a year ago and now need a part. I bought the vacuum cleaner at Makro and even though they had a spare part that I'm looking for they would not sell it to me. They referred me to Tevo. I drove to their outlet in airport Industria and requested the part. The lady said that the service department does not have the part and I may have to wait up to 2 weeks. She did have a sample of the part but refused to sell it to me. I explained the urgency as I need the part to assemble my vacuum cleaner to clean my house. She said that the services department would contact me urgently. Its been 2 days and I'm still waiting for the call and have no idea if they've even ordered the part yet.