Dispute funeral policy pay out

Policy number: ********** **********

I've contacted Metropolitan call centre in November 2018 to increase cover on funeral policy, they initially said they cant do it and will get consultant to call me.Consultant came to see me at work and discuss options and offered new product on funeral policy however indicated there will be 6months waiting period BUT if I increase cover on my current policy there will be 30days waiting period. I opted to go with option to increase my cover on existing funeral policy as I have explained that my dad (Mr David Siloan) had no existing policy.We agreed to increase cover and was advise on 30days waiting period.My dad passed away last week and submitted claim and was told that I will only be paid out initial amount covered for and NOT the increase amount as there is a 6months waiting period and not 30days as advise. I have contacted consultant and now she is stating there is 6months waiting period and not 30days.I have a WhatsApp conversation confirming the 30days waiting period.This has left me in an extremely difficult position as I have mention that my dad had no cover and was under the impression that things would be covered wich left great distress during this difficult time.