Poor Mia Africa after sales support for phone purchased from Takealot

I purchased a Xaiomi Redmi Note 2 phone from Takealot two years. After a year the battery swelled up and burst. I bought a spare battery from the agents (Mia Africa) after being given a huge runaround and very poor service from them for more than a week and many emails later. I complained about their poor service at the time but it was like water over a ducks back! Another year later my battery has swollen again. I have contacted Mia Africa again and have been interrogated by them at length about where I bought my phone and the IMEI and serial number of the phone etc. These questions were repeated many times and again after a week I finally got an answer that they cannot supply the battery (BM45) and will not be able to supply the battery in future either. The result is that I have two locally bought Redmi note 2 phones in perfect working condition that are only two years old and I cannot get batteries for them. Communicating wit Mia Africa is a nightmare! What is the point of having a replaceable battery if you cannot obtain a replacement after a short period of time! In view of my experiences, I will NEVER again purchase ANY Xiaomi product and would strongly urge any one considering purchasing a Xiaomi product to not do so if you you do not wish to incur a huge amount of frustration that leads nowhere. Stick to reputable brands.