NO OTP's being received!!

I have been complaining for the last 3 days about not receiving any OTP's when trying to make a purchase. I have now for 3 days not been able to complete the purchase that I needed to make before Christmas as I needed the item to be delivered before Christmas. I have sent emails to the support team at Mobicred, I got an email back saying that the ticket was resolved when it was not resolved. I have spoken to the support on Facebook and they told me to delete true caller which I did, I am still not getting the OTP's. I also asked them if we can change the OTP's to rather be delivered to my emails then and to see if that makes a difference and my request was ignored. I even asked if we can possibly get someone to phone me and give me the OTP telephonically and my request was ignored. I will really appreciate it if this can be escalated and sorted out.