Kent RO — Poor after sales service

Address:

Kanchipuram, Tamil Nadu, 631006

Ive purchased kent water softener for my washing machine more than 6 months ago from JL enerprises kancheepuram, tamil nadu. I got it installed in my home at arakonam, vellore dt which is 45 min driving distance.
There has been more than 5 occasions when ive visited the store for purchasing regeneration salt and there was no stock available. despite calling them several times to check if they updated the stock, they dont stock up in time causing inconvenience to customer.
last week i asked them to visit my home and change the filter. though they promised that technician would come this week for changing filter, but nobody visited till today nor any call explaining the delay or when can i expect them.
this is serious inconvenience to customer and damage to product they fitted and my washing machine.