The MP who notified Met Police about alleged criminal activity at a London church said he wants the case against reopened.
On Tuesday police said SPAC Nation will not face investigation after the church was accused of fraud and manipulation.
Last year, officers looked into complaints made by former members of the church who claimed they had been targeted by pastors who took out loans in their names.
Met Police said criminal investigation wouldn't be launched into those specific allegations.
"However, during this review detectives identified two separate, similar allegations of fraud reported in different parts of London. The allegations relate to the actions of individuals, not the actions of an organisation, and are being investigated by detectives locally," it added.
The church has always denied the allegations and said it would root out any wrongdoing.
Yet, Croydon North MP Steve Reed said the probe was a "travesty" and police did not follow up on all the allegations he passed on to them.
Mr Reed said he told police about 12 people who claim there was criminal activity in the church.
According to the BBC, the Met confirmed it did not speak to all "potential informants" because of some them failed to get in touch with officers.
"A number of people did not respond to several requests to contact police," it said in a statement.
But Mr Reed said after speaking with five of the 12 people he referred to police, two said police did not make contact with them.
He added the other three said they were contacted but police did not follow up with them.
Mr Reed tweeted that he will be asking the Mayor of London's help to get the criminal review reopened.
In response, the Met said: "Officers made efforts to contact all potential informants, some of whom had spoken with a local MP.
"In addition, some of the information given to third parties was not corroborated when police interviewed potential witnesses or victims."
According to the BBC, the Met said it would review its investigation "should any further information come to light".