Contract Amendments after replacement of tablet

I am very disappointed with Fonechoice treatment towards clients. I bought a Nebula tablet worth higher amount and it was send for screen repair. Without contacting me they lost my tablet in their warehouse and after several phone calls checking on it they decided to replace it with a different tablet without informing me. When i receive the tablet i found that it was the one worth less what i had. I called them and they said they are aware and it will reduce my installment amount.<br> <br> To my surprised the installment never changed. I called them again and they said it will not change the installment amount instead it will change the duration of payment meaning i will settle it sooner. To my surprise i the statement still show the original duration with the original installment. I asked to be send the amendments for the contract and up to now i am still waiting.<br> <br> I really dont understand this horrible service. This is also affecting our trust towards Homechoice since they advertise Fonechoice products. I regret the minute i got into contract with the company. Please resolve this matter.