Poor Product and poor after sale service

Diesel Generator Set Air cooled Model: JDP6000-LDEN Rated Power: 5Kw Rated Voltage: 220v Rated current: 22.7A

I bought this Diesel Generator Set Air cooled from Adendorff Machinery Mart Klerksdorp back in 2015. The generator was basically never in use because I was working abroad, Guinea West-Africa.

Now in 2020 returning to SA permanently I experience a problem with the generator just speeding up and not controlling, most likely the AVR, diesel pump or injector, it does not matter what.

The point I want to make there is no, as in nothing after sales service. I cannot even get a normal diesel filter from Adendorffs. I understand the most likely they only sell goods, but at least have some company that look after you equipment that you sell. Refer me to someone which look after the equipment that you sell as a after sales opportunity.

And so I passed five companies in Klerksdorp and cannot find a normal common diesel filter (no number on the filter) for this generator bought from Adendorffs and no direction to do repairs. This generator was sold to me with no problem buying it. My money was good and there was no shortage of money as I have paid the full amount

When I bought the machine I was never told that there is no after sale service or any parts not available on this product, otherwise I would have never bought the machine. Common sense?

Companies I have approached do not want to work on this machine because they struggle to get parts for this specific generator. I am really upset with myself as I feel I was miss lead in this transaction.

I would like to know how can Adendorffs help me to overcome this problem.?