Voltas — Voltas AC Service Scam

Have a Voltas 1.5 Ton Split AC purchased in March 2016 from a Retailer in Chennai. We were given the Toll free number to reach for service - [protected]. We saved this number and continued to call this number for regular services and movement/shifting till last week. The recent call was made on 01-June-2022 for a regular service. the AC was just fine in working condition and required a regular service. The technician presented himself to our home and told us there is a issue with the board in the indoor unit, suggested a replacement since this will lead to break down of AC in few days/weeks and estimated Rs.8000 for the part replacement. We did a Google Pay transaction of Rs6, 500 and waited till 7-June-2022. After continuous follow-ups those scammers will come home by 9pm, pretend to do something and then leave saying the issue needs some more time to be fixed. On 7-June-2022, went to contactus page in the Voltas website and got another number [protected] and called this number. The call center person then says, that the number [protected] is no longer used by Voltas and hence they are not responsible for the incident that happened to us. When i looked up in internet, looks like there are many reports and similar incident for the same number. When Voltas is moving to a new Toll free number, isnt the AC giants responsibility either to redirect anyone calling old number to new Toll number or disable the Old Toll free number. Voltas customer care people seem to be very negligent and irresponsible and simply arrogant and responding with we are not responsible for what happened to you.
End of the day, in scorching summer heat with a 5 yr old kid we are suffering in chennai for a week without AC and loss of 6500 Rs with so much of agony and mental stress, which all started with a call to what was the Voltas Toll free number given to us when AC was purchased.