Glen — Bad repair

Address:

villa no.69,sunrise valley, on pillar no.179,attapur

I had made complained around 10 on a glen number itself some peson contacted me n came.repaired my stove n chiment n charged me 8500, which I thought was too much, but still paid.
The bill was mde from sai enterprise( mumbai)
After 2 days I started facing a problem, the stove is not fixed well n one is not functioning properly
When I call the numbers I have, there is no response at all
Kindlt help me with the probem