M Reward App Glitch

Had trouble with the app where it showed we could earn a reward but then was not allocated the reward. After contacting the email service center I was given excuses. Then I received a call on 25 Nov at 9:18am to say that they were trying to allocate the reward for me, my mom and fiance but it was not allowing them to. I then suggested an alternative such as a voucher etc as the glitches in the app should not become a burden on the customer. I was informed that they would discuss with the e commerce manager and come back to me with a resolution / gesture of goodwill yet I am still waiting. The rewards featured on the app seems to be an attempt to coerce consumers to buy products based on the perceived rewards that do not materialise.