Bought a reverse osmosis drinking water filtration system from MCS in San Gabriel many years ago. Every time I went in to get new replacement filter, the sales person would tell me to replace my unit because it's so old, Even though there is nothing wrong with my unit, the sales person would insist I buy a new one. Instead of providing good after sales service, they resort to high pressure tactics to make a sale. I just don't feel comfortable with that.
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