Pathetic service from Bosch SA

Purchased a Bosch vacuum cleaner a few months ago. Only reason was because of brand name and 10 year motor guarantee. From day one the floor nozzle has been making the most annoying screeching sounds. Also the filter needs replacing. Nobody in Pretoria kkeps parts on Bosch. Contacted their HO in Midrand to enquire about poor/cheap plasics and parts availability - phones just ring endlessly and no response to emails. Pathetic service for a so-called reputable brand!