PIP paper renewal form

I received my PIP paper renewal form days before Christmas and returned it by 4Feb, posted it tracked and they confirmed on 6/2 they had received. Heard nothing since as yet.

Good evening do not think I explained myself properly they stopped my money said it was because I did not send a letter in they said they would send one out probably take 2 weeks but can take up to 20 days an assessment form, one because they did not send the form he said I have a valid reason, so they should reinstate my pip till I get the pip assessment to fill in but after our conversation got a text saying had asked for a review of there decision which I did not and it could take up to 8 weeks , my thought process is they are going to not send the assessment form and wait 8 weeks then say I didn't give any extra information so my pip is cancelled that is what I am trying to stop. Thank you.