"Fertility clinic referral"

I was referred to fertility clinic in September 2021 by my GP.  I attended GP surgery for bloods and my partner attended clinic in December 2021 to provide a semen analysis.  It wasn’t until a general conversation with a friend in January 2022 that by chance I was made aware of the fact that I should have received a questionnaire to fill in and that it stated on her letter that this must be completed within 4 weeks or she would be removed from the list.  I did not receive a questionnaire so contacted by GP to find out about this and found that I have been discharged from the fertility waiting list. This is extremely frustrating and upsetting considering we had assumed we were just awaiting the next steps and would be contacted by the clinic when we had an appointment to get seen.  

I work in healthcare and am aware that services are stretched so assumed we would have a wait.  Luckily, due to the conversation with my friend I was able to chase up my questionnaire, only to find that fertility clinic state they sent one which was not received by myself.  I know my correspondence address is correct as I have had lots of letters from the recurrent pregnancy loss clinic in the past year.  So either the letter was not sent or it was lost in transit.  It shocks me to learn there is NO safety net to ensure that a patient received a questionnaire and that they didn’t just not bother to send it back as they have possibly fallen pregnant in the meantime as I’ve been informed happens a lot - however this is sadly not the case for lots of people and causes a lot of upset and anxiety.  There is also no correspondence sent to the GP to state that a patient has been discharged - so they were under the same impression that my referral was still active until they investigated the questionnaire on my behalf.  I am now concerned that any help I require is going to take even longer.  Can someone please advise on what could be done to ensure a patient is not wrongly discharged from this clinic?  Thanks