Samsung Galaxy M30s battery & hanging problem. Review on Samsung Galaxy M30s

I purchased Samsung Galaxy M30s Mobile phone from online website under order no is 11108308976 from Savex Technologies Pvt Ltd Invoice No DELMP1820110703 and it was delivered on 13.02.2020. Within 3 months of purchase I faced problem with battery as battery charging is very slow and drains very fast. I wrote mail on 26.05.2020 to the Samsung but no reply or support. Now(after 13 Months from purchase) I am facing a problem in booting. Only Samsung M30s logo was shown on restart. I visited Mayur Vihar Phase –I Samsung service center. Firstly they charged Rs 177(Invoice No CPOINT15225) for estimating the issue(which they couldn’t). Then she told me Rs 1300 as repair charges. I agreed. And then the scam began as after charging those 1300 bucks she told me that they will charge Rs.6000-7000 as mother board is to be replaced. I requested for returning my phone and now amazingly, even Samsung logo is not displayed. And they have now removed the charging part too. They were successful in their mission of returning me my phone in a worse state then it was earlier. Within one year we faced several problems in mobile. Anyhow Motherboard changed in the above service center after payment of 1K. Now after one year again same problem & same suggestion but this time service center inform me after 2 days company stopped manufacturing of motherboard. As per my experience with this product was very bad. I also come to know that there is problem with Exynos 9611 processer and have security issue. In future Samsung Product a big No –No.