Shocking support service from Mr Price

So shocked at how bad the support/service is here. I've been paying my account via the app but the app didn't pick up my payments, I got a call saying I'm in arrears, I said that can't be and the agent proceeded to argue with me and put down the phone. Then I spoke to someone else and the same thing happened only this time I was told to fax through proof of payment. I emailed proof of payment but still nothing, this has been going on for weeks now. They still haven't credited me?

It's like every agent I speak to has an attitude and doesn't understand my frustration and they don't want to help me. It's fine, I just wont shop at Mr price anymore, it's that simple and I will tell my friends and family about my experience too.