Unimpressive discovery vitality service!

i didn't get my healthy food cash back for the month of October. my billing cycle ends on the 27th of every month, so i should get the cash back between 3-5 working days after that. To date i haven't received that. send a few queries to vitality and no one has really followed up on this and got back to me with a truthful feedback. i resorted to calling their call center and as always its a night mare to have to wait forever with no consultant attending to me. called for the most past of this morning and hasn't gotten through. its very frustrating having to succumb to that. its so unreliable platform and at this rate i m sure no client of theirs is impressed by the unavailability.