Guarantee claim

We bought a base & mattress from Dial a Bed, Atterbury which is still under guarantee. On 13/01/2015 I contacted the store & emailed the invoice to them. I contacted the store several times to find out what the process is for the guarantee claim. Every time I get another excuse - like they are busy changing from companies but someone will contact me. I did not get joy from Solly who assisted me & spoke to the manager Ryno. He also promised that someone will contact me on Tuesday,10 February which never happened! I contacted the store again on 11 February but Ryno was not available & I left a message with Solly whom promised to call me back (previous times he never called back!) & AGAIN had the excuse about the company that is in the process of changes that is happening. Until today not Solly nor Ryno or anyone else contacted me! How pathetic that a client needs to call every time just to hear empty promises! I am the client and don't care about internal politics and what is happening within the company! My money was good enough when I bought the set, but the after sale service is null and void!