Mts — porr survice and follow ups

i have applied for mts on 31st my mts number is [protected].. but i cud not instrall my device, in my desktop or laptop, , , i registereed complaint with them they told me that it shd be dedvice fault, , and wud replace with new nevice, , but nothing had hppened, , no one visitited the plce to solver the issue, , insted i received 3 calls from 3 different person, , first one told me to wit till 5 th, , , second person told me your problem resolved hence they r goin t to cls the complint, , , after i told no one visitied and the problem is still not resolved then they asked sorry and told the sme that the propblem will be rectified and the thrid person asked me to go to near by mts centre mduravoyal, , , to upgarde the device, , , the person at madurvoyal told me we are not supposed to do this but for custome they are doing it and finally tried to upgrade the device, , but filed and agiana he sked me to come late in the evening, , i was totally fed up wht theier serivce, , so pls dont ever think abt mts go for the best one, , ,