Discovery - stopped processing my claims and can't even tell me why

Discovery has always paid out my claims within about 3 days (great service up to March 2018). Since March this year, I cannot get them to even process my claims. I have submitted via the app, with no feedback. Called in and was told it would be processed asap and they can't see why it wasn't done. Nothing happened after about a week so I logged a complaint via email. I then received half a reply just saying something about it's unclear (no feedback on what I should do); so I called again. I was asked to resubmit my then 2 outstanding claims via email (since clearly the app doesn't work the way it used to and my claims are now miraculously becoming blurry after submitting to Discovery). I re-submitted 2 claims via email on 4 May. Nothing happened in terms of processing the claim. I called in again on 14 May and was promised it's now being put on a priority log and will be paid within 24hours. 2 days later I called in again and was just told I have to wait 3 days (not sure what happened to the promised 24h processing or call back promise!?!). I am so tired of hearing it takes 2 to 3 days and then waiting a week and hearing the same story. How many times should a person call or resubmit just to get empty promises of 2 to 3 days?! I now have 3 claims stuck in some queue and just simply not being processed. How long will this go on?? When can someone give me a better excuse that repeating "you must wait 2 to 3 days mam"? I have been waiting over 2 months for the 1st one on my list. Please can someone who knows how your system works please assist me?