Terrible service ever

I signed a contract for a Nokia 2.1 phone with MRPmobile in February 2019. the service was great at sales stage hence I signed the contract. From the very first day after the phone was delivered, it froze, I couldn't use the phone. I phoned to inform them and they fetched the phone after a week. the phone was brought back in good condition but after 2 months again, I experienced the same problem. I reported and they fetched it again. at the moment I am having a dead phone. I reported this 2 weeks back no body bothered to come back to me. The service it extremely terrible ever since I engaged myself with them. I have spoken to more than 5 agents but everyday I call I don't get satisfaction. Stay away from MRPMOBILE. I don't have a phone at the moment but am paying the contract every month, how sad. The last person I spoke to today was Lungile, she promised to escalate my complaint to the manager, but I am still waiting for that call.