Carrier Midea India — Inverter AC is poor product of Carrier

We have bought 2 Ac is in the frequency of 1 month last year one is 2 ton for my office and 1 ton for my home. 30th October is our warranty expiry date. 24th October suddenly my ac is not working when I saw the error come PO, we find it error on google then I find its power supply error from PCB. so I registered a call, after 3 days there person calling to come but there no shows as a spam no in truecaller, so I did not picked as most of people did not pick spam calls. then after few days I received msg your service request is closed because of not responding call. i am shocked then again I tried call on last date on warranty period also discuss lots with call centre executive to reopen my old case. but she not accepted our request again there person come for instapections, this time I received every spamcalls, then they will come and said its it out of warranty now, you have to pay the expenses approx 18k. so I did not accept ask to go I will talk with there top management, so I approached there MD and chairman and in mail privately in first week of November but did not get response. same history for my home ac, with similar error. this time I am alert and got replacement under warranty. there service engineer told me unofficially this product is not successful. lots of complain of PO error. I personally requesting to everyone do not buy any Invertor AC of Carrier product. its unsuccessful products. rest is your decision