Bad service from finrite

I have claimed for a phone since June, there were no responses initially, then I made contact with them after a while they told me to pay access which i did, then they told me that the phone that i want is not there. , i waited, then it was in stock but i have to pay 700 on top, then now the 700 has changed to 1000. im extremely unhappy because i wasnt told that i am going to have to top up the amout because i bought the phone for 5000 now it is magically increasing and they are not willing to help. The communication is extremely poor from thier side