Very Worried About Credibility of Reviews

I usually use Hellopeter to see if I'm making the right choice, never had an account though. I am hiring a moving company, and before I paid the company I decided to assess the Hellopeter reviews about it. The reviews were bad, so I searched for others and when I assessed the reviews I couldn't help but notice that all the movers with 5 stars all had happy customers. Not 1 bad review. How? All these reviews had the same thing in common:

1- Reviewer has only 1 review 2- Customer had a 5 star rating 3- Comment was submitted the same month the account was created.

So I decided to finally make an account and review Hellopeter. Please screen your reviews. This is very helpful, but the lack of quality control measures has made me skeptical about your ability to crowd source the truth.

Lastly these aren't small companies who are doing this.e.g Biddulphs International.